NWS AHPS

NOAA
National Oceanic and Atomospheric Administration http://www.noaa.gov

National Weather Service
National Weather Service www.weather.gov

Backlick Run at Armistead Boothe Park (ABPV2)
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Cheat River at Albright (ABRW2)
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Absecon Creek at Absecon (ABSN4)
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Allegheny River at C.W. Bill Young Lock and Dam (ACMP1)

Northwest Branch Anacostia River near Hyattsville (ACOM2)

New Jersey Atlantic Coast at Atlantic City (ocean front) (IN MLLW) (ACYN4)

Cedar Run near Aden (ADEV2)

Tuscarora Creek at South Addison (ADNN6)

Middle Fork Tygart Valley River at Adolph (ADOW2)

Middle Fork Tygart Valley River at Audra (ADRW2)

Four Mile Run at Alexandria (AFRV2)

Canisteo River near Arkport (AKLN6)

Hudson River at Albany (ALBN6)

Inside Thorofare at Atlantic City (IN MLLW) (ALCN4)

Lackawaxen River near Aldenville (ALDP1)

Four Mile Run above Highway 1 at Alexandria (ALEV2)

Brodhead Creek at Analomink (ALKP1)

Manasquan River at Allenwood (ALLN4)

Allen Creek at Rochester (ALLN6)

Mahoning River at Alliance (ALLO1)

Little Lehigh Creek near Allentown (ALLP1)

Jordan Creek at Allentown (ALNP1)

Buckhannon River at Alton (ALTW2)

West Branch Susquehanna River at Allenwood (ALWP1)

Accotink Creek near Annandale (ANAV2)

Severn River at Annapolis (IN MLLW) (APAM2)

Little Lehigh Creek at Allentown (APAP1)

Unnamed Tributary at New Alexandria Storm Water Pumping Station - Downstream (APSV2)

Lackawanna River at Archbald (ARHP1)

Captina Creek at S.R. 148 at Armstrong Mills (ARMO1)

Arrowhead Run at Thayerville (ARTM2)

Little Bull Run at Artemus Road (ARTV2)

Absecon Creek at Absecon (IN MLLW) (ASCN4)

Esopus Creek at Ashokan Reservoir East (ASEN6)

Buffalo Creek (Wash Co) near Atcheson (ATCP1)

Unnamed Tributary above New Alexandria Tide Gate (ATGV2)

Absecon Channel at Atlantic City Marina (IN MLLW) (ATLN4)

Tuscarawas River at Atwood Dam Pool (ATLO1)

Tonawanda Creek at Attica (ATTN6)

Aughwick Creek near Three Springs (AUGP1)

Owasco Outlet at Auburn (AUON6)

Cohocton River at Avoca (AVCN6)

Cross Creek at Avella (AVEP1)

Ingram Thorofare at Avalon (IN MLLW) (AVLN4)

Genesee River at Avon (USACE) (AVNN6)

Genesee River at Avon (AVON6)

Spring Creek near Axemann (AXEP1)

Potomac River at Alexandria (AXTV2)

Ayelsworth Creek Lake near Jermyn (AYLP1)

Bynum Run at Bel Air (BABM2)

Cohocton River at Bath (BACN6)

Cohocton River at Bath (BAHN6)

Susquehanna River at Bainbridge (BAIN6)

Great Egg Harbor River near Blue Anchor (BANN4)

Loyalsock Creek at Barbours (BARP1)

Barnegat Bay near Bayshore (IN MLLW) (BASN4)

Mullica River near Batsto (BATN4)

New York Harbor at The Battery (IN MLLW) (BATN6)

Beaver Brook at Belvidere (BBBN4)

Bronx River at Bronx Botanical Gardens (BBGN6)

Big Brook at Marlboro (BBMN4)

Buckhall Branch at Signal Hill Road (BBSV2)

Bald Eagle Creek at Blanchard (BCHP1)

Georges Run near Beckleysville (BCKM2)

Unnamed Tributary at Burke Centre Regional Pond (BCNV2)

West Fork River at Butcherville (BCVW2)

Middle Brook at Bound Brook (BDBN4)

Monongahela River at Braddock Lock and Dam (BDDP1)

Monocacy River at Bridgeport (BDGM2)

Raritan River at Bound Brook (BDKN4)

Lake Ontario at Braddock Heights (BDKN6)

Delaware River at Burlington (IN MLLW) (BDRN4)

Delaware River at Bridesburg (IN MLLW) (BDSP1)

Seneca River near Baldwinsville (BDWN6)

Beaver River near Beaver Falls (BEAP1)

Bald Eagle Creek near Beech Creek Station (BECP1)

Raystown Branch Juniata River at Wolfsburg (BEDP1)

Sideling Hill Creek near Bellegrove (BELM2)

Dunning Creek at Belden (BELP1)

Tygart Valley River at Belington (BELW2)

Shavers Fork Cheat River at Bemis (BEMW2)

Winters Run near Benson (BENM2)

Chautauqua Lake at Bemus Point (BEPN6)

Dry Marsh Run near Berryville (BERV2)

Passaic River above Beatties Dam (BETN4)

Lehigh River at Bethlehem (BETP1)

Unnamed Tributary at Fox Lair Regional Pond in Burke (BFXV2)

Patuxent River below Brighton Dam (BGHM2)

Nanticoke River at Bridgeville (BGLD1)

Barnegat Bay at Barnegat Light (IN MLLW) (BGLN4)

Kill Van Kull at Bergen Point (IN MLLW) (BGNN6)

Mill Creek (WV) at Bunker Hill (BHMW2)

Bush Kill near Arkville (BKAN6)

Schoharie Creek at Breakabeen (BKBN6)

Fish Creek at Becks Grove (BKGN6)

Red Bank Creek at Brookville (BKLP1)

Broad Run at Buckland (BKLV2)

Buckhannon River at Buckhannon (BKNW2)

Kettle Run at Bristow Manor GC (BKRV2)

Millstone River at Blackwells Mills (BKWN4)

Grave Run near Beckleysville (BKYM2)

Musconetcong River at Bloomsbury (BLBN4)

Genesee River at South Rochester at Ballantyne Bridge (BLBN6)

James Run near Belcamp (BLCM2)

Anacostia River at Bladensburg (BLDM2)

Bald Eagle Creek (South) at Tyrone (BLDP1)

S Branch Eighteenmile Creek at Eden Valley (BLEN6)

Little Falls at Blue Mount (BLMM2)

Shark River at Belmar (IN MLLW) (BLMN4)

North Branch Potomac River above Jennings Randolph Dam (BLMW2)

Wheeling Creek OH below Blaine (BLOO1)

Paulins Kill at Blairstown (BLRN4)

Backlick Run at Van Dorn Street in Alexandria (BLRV2)

Northwest Branch Patapsco River at Baltimore/Fort McHenry (IN MLLW) (BLTM2)

Root Creek at BOLIVAR (BLVN6)

Susquehanna River at Bloomsburg (BMBP1)

Pike Run at Belle Mead (BMDN4)

Tulpehocken Creek below Blue Marsh Dam (BMRP1)

Marsh Creek at Blanchard (BNDP1)

Susquehanna River at Binghamton (BNGN6)

North Branch Potomac River at Barnum (BNMW2)

Northwest Branch Anacostia River at North Brentwood (BNTM2)

Lycoming Creek at Bodines (BODP1)

Rockaway River at Boonton below reservoir (BONN4)

Rockaway River at Boonton (BOON4)

Black River at Boonville (BOON6)

Rockaway River at Boonton above reservoir (BOTN4)

Murderkill River at Bowers Beach (IN MLLW) (BOWD1)

Patuxent River near Bowie (BOWM2)

Shavers Fork Cheat River at Bowden (BOWW2)

Anacostia River at Buzzard Point in Washington DC (BPAD2)

Bynum Run near Abingdo (BRAM2)

Tunungwant Creek near South Bradford (BRAP1)

Bear Creek at Friendsville (BRCM2)

Black Rock Canal at Black Rock Lock (BRCN6)

Schuylkill River at Berne (BREP1)

Brushy Fork above Clendening Lake (BRFO1)

Neversink River at Bridgeville (BRGN6)

Burgett's Fork Creek at Burgettstown (BRGP1)

Buffalo Creek (WV) at Barrackville (BRIW2)

Potomac River near Washington DC (Little Falls) (BRKM2)

Mahoning River at Berlin Dam (BRLO1)

Baisman Run at Broadmoor (BRMM2)

Back Branch near Upper Marlboro / Brown Landfill (BRNM2)

Little Kanawha River at Burnsville Lake (BRNW2)

Broad Run at Nokesville Road (VA-28) (BRRV2)

Broad Run near Bristow (BRSV2)

Schoharie Creek at Burtonsville (BRTN6)

Big Pipe Creek at Bruceville (BRUM2)

Indian Creek at Berwyn Heights (BRWM2)

Mahoning River below Berlin Dam (BRWO1)

Delaware River at Barryville (BRYN6)

South Fork South Branch Potomac River at Brandywine (BRYW2)

Beetree Run near Bentley Springs (BSBM2)

Big Spring Creek above Big Spring (BSCP1)

Tributary to Warm Springs Run near Berkeley Springs (BSDW2)

North Fork Shenandoah River below Burnshire Dam (BSHV2)

Ten Mile Creek near Boyds (BTMM2)

Lamington (Black) River at Burnt Mills (BTMN4)

Savage River near Barton (BTNM2)

Passage Creek near Buckton (BTNV2)

Tonawanda Creek at Batavia (BTVN6)

Lake Erie near Buffalo (BUFN6)

Eighteenmile Creek (Lk Ontario) above Burt (BURN6)

Little Kanawha River below Burnsville (BURW2)

Central PA Dams Bush Dam on Kettle Creek (BUSP1)

Delaware River at Belvidere (BVDN4)

Indian Creek at Beltsville / Odell Road (BVLM2)

Woodcock Creek at Blooming Valley (BVLP1)

Maurice River at Bivalve (IN MLLW) (BVVN4)

Unnamed Tributary at Bowie (BWEM2)

West Branch Susquehanna River at Bower (Mahaffey) (BWRP1)

Blackwater River (WV) at Davis (BWRW2)

Warm Springs Run near Berkeley Springs (BWSW2)

Seneca River near Port Byron (BYRN6)

Opequon Creek near Berryville (BYVV2)

North Fork South Branch Potomac River at Cabins (CABW2)

Passaic River at Chatham (CAMN4)

Cape May Harbor at Cape May Harbor (IN MLLW) (CAPN4)

Chartiers Creek at Carnegie (CARP1)

Catfish Run at West Maiden (CATP1)

Cayuga Lake at Mud Lock (CAYN6)

North Branch Potomac River at Cumberland (CBEM2)

Centennial Branch Little Patuxent River at Centennial Lake (CBPM2)

Cobleskill Creek at Cobleskill - S Grand St (CBSN6)

French Creek at Cambridge Springs (CBSP1)

Conewago Creek near Bellarie (CCBP1)

Callicoon Creek above Callicoon (CCCN6)

Crooked Creek at Crooked Creek Dam Tailwater (CCDP1)

Conneaut Creek at Conneaut (CCKO1)

Cherry Creek near McHenry (CCMM2)

Chiques Creek above MARIETTA (CCMP1)

Chillisquaque Creek near Potts Grove (CCPP1)

Delaware River at Callicoon (CCRN6)

Crab Creek at Youngstown (CCRO1)

Codorus Creek near Saginaw (CCSP1)

Brandywine Creek at Chadds Ford (CDFP1)

North Branch Patapsco River at Cedarhurst (CDHM2)

Cedar Run near Catlett (CDRV2)

Miller's Run at Cecil TWP (CECP1)

Pine Creek at Cedar Run (CEDP1)

Seneca River at Free Bridge (CFBN6)

Tygart Valley River at Colfax (CFXW2)

Unnamed Tributary at Retention Pond near Columbia Gateway (CGWM2)

Pequannock River at Charlottesburg (CHAN4)

Christina River at Coochs Bridge (CHBD1)

Shavers Fork Cheat River at Cheat Bridge (CHBW2)

Chesapeake and Delaware Canal at Chesapeake City (IN MLLW) (CHCM2)

Chemung River at Elmira (CHEN6)

Sligo Creek near Chillum / Riggs Rd. (CHLM2)

Chenango River at Oxford (CHON6)

Choconut Creek near Choconut (CHOP1)

South Branch Pennsauken Creek at Cherry Hill (CHRN4)

Black Creek at Churchville (CHRN6)

Monongahela River at Charleroi Lock and Dam (CHRP1)

Chestnut Creek (NY) at Grahamsville (CHSN6)

Chester Creek near Chester (CHSP1)

Beaverdam Creek near Cheverly (CHVM2)

Otselic River at Cincinnatus (CINN6)

Beaver Kill at Cooks Falls (CKFN6)

Susquehanna River at Conklin (CKLN6)

Beaverdam Run at Cockeysville (CKYM2)

Northwest Branch Anacostia River near Colesville (CLAM2)

Oneida Lake at Cleveland (CLEN6)

Assunpink Creek at Clarksville (CLKN4)

Brushy Fork at Clendening Dam Pool (CLKO1)

West Fork River near Clarksburg (CLKW2)

Youghiogheny River at Connellsville (CLLP1)

Eastern Bay at Claiborne (IN MLLW) (CLNM2)

Mulhockaway Creek at Clinton (CLNN4)

Allegheny River at Clinton Lock and Dam (CLNP1)

Delaware Bay at Cape May (IN MLLW) (CMAN4)

Conemaugh River at Conemaugh Lake Tailwater (CMDP1)

Chemung River at Chemung (CMGN6)

Cohocton River near Campbell (CMPN6)

Chartiers Creek at S. Central Ave (CNBP1)

Canandaigua Lake at Canandaigua (CNDN6)

Youghiogheny River at Confluence (CNFP1)

Conemaugh River at Conemaugh Lake Pool (CNMP1)

West Branch Delaware River at Cannonsville Reservoir (CNNN6)

Chenango River near Chenango Forks (CNON6)

Conestoga River at Conestoga (CNSP1)

Susquehanna River at Conowingo Dam (CNWM2)

Mohawk River at Cohoes (COHN6)

Clarion River near Cooksburg (COKP1)

North Fork Shenandoah River at Cootes Store (COOV2)

Scriba Creek near Constantia (COSN6)

West Branch Brandywine Creek at Coatesville (COTP1)

Cowaselon Creek near Canastota (COWN6)

Central PA Dams Cowanesque Dam on Cowanseque River (COWP1)

Yellow Breeches Creek near Camp Hill (CPHP1)

Canandaigua Outlet at Chapin (CPNN6)

Paint Branch near College Park (CPPM2)

Crooked Creek above Crooked Ck. Dam Pool (CRCP1)

Cub Run near Centreville (CRCV2)

Kettle Creek at Cross Fork (CRFP1)

Chemung River at Corning (CRNN6)

Cameron Run at Eisenhower Avenue in Alexandria (CRPV2)

Old Courthouse Spring Branch at Carrington Regional Park (CRRV2)

Tioughnioga River at Cortland (CRTN6)

West Branch Susquehanna River near Curwensville (CRVP1)

Central PA Dams Curwensville Dam on West Branch Susquehanna (CRWP1)

Little Patuxent River below Lake Kittamaqundi (CSEM2)

Catharine Creek at Montour Falls (CTEN6)

Bull Run near Catharpin (CTHV2)

Ten Mile Creek near Clarksburg (CTMM2)

Little Patuxent River at Centennial (CTNM2)

Middle Branch Nimishillen Creek at Canton (CTNO1)

Patapsco River near Catonsville (CTSM2)

Chittenango Creek near Chittenango (CTTN6)

Flatlick Branch at Chantilly (CTYV2)

Little Paint Branch at Beltsville / Briggs Chaney Road (CVTM2)

Wills Creek near Cumberland (CWCM2)

East Mahantango Creek near Dalmatia (DALP1)

Susquehanna River at Danville (DANP1)

Blackwater River (WV) above Davis (DAVW2)

Seneca Creek at Dawsonville (DAWM2)

Deckers Creek at Morgantown (DCKW2)

Passaic River at Clifton (Dundee Dam) (DDCN4)

Mohawk River at Delta Dam (DDMN6)

Dead Run near Catonsville (DEDM2)

Delaware River at Delaware City (IN MLLW) (DELD1)

Gwynns Falls near Delight (DELM2)

West Branch Delaware River above Delhi (DELN6)

Rehoboth Bay at Dewey Beach (IN MLLW) (DEWD1)

Holmes Run at Alexandria / Fairfax Border (DKNV2)

Tygart Valley River at Dailey (DLYW2)

Clearfield Creek at Dimeling (DMLP1)

Short Creek near Dillonvale (DONO1)

White Clay Creek near Newark (DPKD1)

Depot Pond at Upper Marlboro (DPNM2)

Saw Mill Run at Duquesne Heights (DQHP1)

Difficult Run at Browns Mill Road / Wolf Trap (DRBV2)

Keuka Outlet at Dresden (DRDN6)

Dead Run at Franklintown (DRFM2)

Deer Creek (MD) near Darlington (DRLM2)

Lycoming Creek above Deer Crossing (DRXP1)

Dry Brook at Arkville (DRYN6)

Unnamed Tributary at Dulles Station near Herndon (DSCV2)

Ohio River at Dashields Lock and Dam (DSHP1)

Canaseraga Creek at Dansville (DSVN6)

Sandy Lick Creek at Dubois (DUBP1)

Mill Brook near Dunraven (DUNN6)

St. Jones River at Dover (DVDD1)

Piney Run at Dover (DVRM2)

Rockaway River at Dover (DVRN4)

East Branch Delaware River at Downsville below Pepacton Dam (DWNN6)

East Branch Brandywine Creek below Downingtown (DWNP1)

East Branch Herbert Run at Arbutus (EBHM2)

East Branch Clarion River Lake near Glen Hazel (EBRP1)

Cazenovia Creek at Ebenezer (EBZN6)

Hudson Branch near Rogers Avenue at Ellicott City (ECHM2)

Oneida River at Brewerton Lock E-23 (ECLN6)

Little Conemaugh River at East Conemaugh (ECMP1)

Easy Creek at Prince William Parkway (ECPV2)

Potomac River at Edwards Ferry (EDFM2)

Little Bush Kill at Edgemere (EDGP1)

Northeast Branch Anacostia River at Edmonston (EDMM2)

Erie Canal at Clyde Lock E-26 (EGLN6)

Perkiomen Creek at East Greenville (EGRP1)

Big Elk Creek at Elk Mills (EKMM2)

Patapsco River near Elkridge below Patapsco Valley State Park (ELKM2)

Cowanesque River at Elkland (ELKP1)

Tygart Valley River at Elkins (ELKW2)

Middle Fork Tygart Valley River at Ellamore (ELLW2)

Patapsco River at Ellicott City (ELPM2)

Allegheny River at Eldred (ELRP1)

Ohio River at East Liverpool (ELVO1)

Erie Canal at Lyons Lock E-27 (ELYN6)

Monongahela River at Elizabeth Lock and Dam (ELZP1)

Little Kanawha River at Elizabeth (ELZW2)

Ohio River at Emsworth Lock and Dam (EMSP1)

Ohio River above Emsworth L/d Pool (EMXP1)

Blockhouse Creek near English Center (ENGP1)

West Fork River at Enterprise (ENTW2)

Schoharie Creek at Esperance (EPCN6)

Waldy Run near Emporium (EPMP1)

Patapsco River near Elkridge at Patapsco Valley State Park (ERDM2)

Lake Erie above Erie (EREP1)

Tioga River near Erwins (ERWN6)

Ouleout Creek at East Sidney Dam (ESDN6)

Ouleout Creek below East Sidney Dam (ESIN6)

Delaware River at Easton (ESTN4)

Little Beaver Creek at East Liverpool (ESTO1)

Little Pine Creek near Etna (ETNP1)

Clyde River at Mays Point Lock E-25 (ETRN6)

Oneida River near Euclid (EUCN6)

Big Sister Creek at Evans Center (EVCN6)

East Brook near Walton (EWAN6)

Shabakunk Creek at Ewingville (EWGN4)

Crosswicks Creek at Extonville (EXTN4)

Lake Ontario at Breakwater Light (Fair Haven) (FAIN6)

Lake Erie near Fairport Harbor (FAIO1)

Conewago Creek near Falmouth (FALP1)

North Branch Raritan River near Far Hills (FARN4)

Conococheague Creek at Fairview (FAVM2)

Flat Branch at Ben Lomond Park (FBPV2)

Fishing Creek at CRALEY (FCCP1)

Fishing Creek at Grassmere Park (FCGP1)

Fishing Creek near Bloomsburg (FCKP1)

Frankford Creek at Philadelphia (FCRP1)

Lackawanna River above Forest City (FCYP1)

Canadaway Creek at Fredonia (FDAN6)

Monocacy River near Frederick at Interstate 70 (FDKM2)

Stonycreek River at Ferndale (FDLP1)

Unnamed Tributary near Fairfax Center (FFXV2)

South Branch Potomac River at Franklin (FKLW2)

Flat Brook above Flatbrookville (FLAN4)

Flat Branch at Lomond Drive (FLBV2)

Chadakoin River at Falconer (FLCN6)

Flint Creek near Phelps (FLIN6)

Fall Creek at Ithaca (FLLN6)

Little Conestoga Creek at Flory Mill (FLMP1)

Whitemarsh Run near Fullerton (FLRM2)

Peter's Creek at Venetia (FLYP1)

Beaver Run near Finksburg (FNKM2)

Fox Creek near Schoharie (FOXN6)

Youghiogheny River at Friendsville (FRDM2)

Delaware River at Frenchtown (FREN4)

Allegheny River at Freeport Lock and Dam (FREP1)

Allegheny River at Franklin (FRKP1)

Monocacy River at Monocacy Blvd. in Frederick (FRMM2)

South Fork Shenandoah River at Front Royal (FROV2)

East Branch Delaware River at Fishs Eddy (FSHN6)

Painter Run near Fort Ashby (FTAW2)

Niagara River near Ft. Erie (FTEQ6)

Loyalsock Creek at Forksville (FVLP1)

Holmes Run at Fairview Lake (FVLV2)

Long Green Creek at Glen Arm (GALM2)

Minebank Run near Glen Arm (GAMM2)

Green Brook at Seeley Mills (GBKN4)

Unnamed Tributary below Greenbelt Lake near Greenbelt (GBLM2)

Schoharie Creek at Gilboa Bridge (GBRN6)

Sawmill Creek at Glen Burnie (GBSM2)

Beaverdam Creek near Greenbelt / Edmonston Road (GBTM2)

Gunpowder Falls at Glencoe (GCEM2)

Cacapon River near Great Cacapon (GCPW2)

Central PA Dams at Glendale Lake (GDDP1)

Buffalo Creek at Gardenville (GDVN6)

Great Egg Harbor River at Folsom (GEHN4)

Gwynns Falls near Woodlawn (GFGM2)

Gunpowder Falls at Hoffmanville (GFHM2)

Difficult Run near Great Falls (GFLV2)

East Branch Clarion River Lake at East Branch Dam Tailwater (GHDP1)

Schoharie Creek at Gilboa Dam (GILN6)

Lehigh River at Glendon (GLDP1)

Dry Fork River at Gladwin (GLDW2)

Little Kanawha River at Glenville (GLEW2)

Muncy Creek at Glen Mawr (GLMP1)

Paxton Creek near Glenwood (GLWP1)

Chenango River at Greene (GNEN6)

The Glade near HOWLAND DRIVE (GNHV2)

Casselman River at Grantsville (GNTM2)

Seneca Lake at Geneva (GNVN6)

Little Shenango River at Greenville (GNVP1)

Fishing Creek at Goldsboro (GOLP1)

Cattaraugus Creek at Gowanda (GOWN6)

Pequannock River at Green Pond Junction (GPJN4)

Perkiomen Creek at Graterford (GRAP1)

Green Brook at Plainfield (GRBN4)

Oatka Creek at Garbutt (GRBN6)

Two Lick Creek at Graceton (GRCP1)

Wallkill at Gardiner (GRDN6)

Brandy Run near Girard (GRDP1)

Marsh Run at Grimes (GRMM2)

Unnamed Tributary at Greenbelt (GRNM2)

Little Kanawha River at Grantsville (GRTW2)

Cohansey River at Greenwich (IN MLLW) (GRWN4)

Potomac River at Georgetown / Wisconsin Ave (GTND2)

Millstone River at Griggstown (GTNN4)

Girty's Run at Girty's Run (GTYP1)

Kinzua Creek above Guffey (GUFP1)

Monongahela River at Grays Landing Lock and Dam (GYLP1)

Hackensack River at Hackensack (HACN4)

Buckhannon River at Hall (HALW2)

Royce Brook at Hamilton Road (HAMN4)

Tonoloway Creek near Hancock (HANM2)

Ohio River at Hannibal Lock and Dam (HANO1)

Susquehanna River at Harrisburg (HARP1)

South Branch Raritan River at High Bridge (HBRN4)

West Branch Delaware River at Hobart (HBTN6)

Huntington Creek at Jonestown (HCJP1)

Cooper River at Haddonfield (HDDN4)

Chesapeake Bay at Havre de Grace (IN MLLW) (HDGM2)

Sacandaga River at Hadley (HDLN6)

Patterson Creek near Headsville (HDSW2)

Hudson River at Hadley (HDYN6)

Bermudian Creek near Heidlersburg (HEIP1)

Dry Fork River at Hendricks (HENW2)

Lycoming Creek at Hepburnville (HEPP1)

Swatara Creek near Hershey (HERP1)

Hogue Creek near Hayfield (HFDV2)

Potomac River at Harpers Ferry (HFEW2)

Unnamed Tributary above Heritage Glen Dam (HGDM2)

Conodoguinet Creek near Hogestown (HGSP1)

West Canada Creek at Hinckley Dam (HIKN6)

West Branch Delaware River at Hale Eddy (HLEN6)

West Branch Perkiomen Creek at Hillegass (HLGP1)

Loyalsock Creek at Hillsgrove Town (HLLP1)

Eighteenmile Creek (NY) at Hamburg (HMBN6)

Unnamed Tributary at Hunter Mill Estates Regional Pond (HMEV2)

Lake Ontario at Hamlin Beach State Park (HMLN6)

Willow Springs Branch near Centreville (Hampton Forest Sec 4 Regional Pond) (HMPV2)

Yellow Creek at Homer City (HMRP1)

West Branch Brandywine Creek at Honeybrook (HNBP1)

Paint Branch near Hillandale / Powder Mill Road (HNDM2)

Dyberry Creek near Honesdale (HNEP1)

Potomac River at Hancock (HNKM2)

Honeoye Creek at Honeoye Falls (HNYN6)

Hohokus Brook at Ho-Ho-Kus (HOHN4)

Lackawaxen River at Honesdale (HONP1)

Sacandaga River at Hope (HOPN6)

Canisteo River at Hornell (HORN6)

Spring Creek at Houserville (HOUP1)

Youghiogheny River at Hoyes (HOYM2)

Unnamed Tributary at Huntington Ponding Area (HPAV2)

Cameron Run at Huntington - Metro Bridge (HPKV2)

Herring Run at Mount Pleasant in Baltimore (HREM2)

Canacadea Creek at Almond Dam (HRLN6)

Canacadea Creek above Hornell (HRNN6)

Hooes Run at Old Bridge Road (HROV2)

Cuyahoga River at Hiram Rapids (HRPO1)

East Fork Duck Creek below Harriettsville (HRTO1)

Holmes Run at Van Dorn Street (HRVV2)

Town Brook near Hobart (HTBN6)

Middle Run at Huntsman Lake (HTLV2)

Southwest Branch near Largo / Harry S Truman Dr (HTNM2)

Swatara Creek at Harper Tavern (HTVP1)

Muncy Creek at Hughesville (HUHP1)

Juniata River at Huntingdon (HUJP1)

Pequest River at Huntsville (HUNN4)

East Branch Delaware River at Harvard (HVDN6)

Lackawaxen River at Hawley (HWYP1)

Wills Creek below Hyndman (HYDP1)

West Branch Susquehanna River at Hyde (HYEP1)

Unnamed Tributary near Beltsville / Virginia Manor Road (ICKM2)

Cayuga Inlet at Ithaca (ICNN6)

Cayuga Lake at Ithaca (ICYN6)

Crooked Creek at Idaho (IDAP1)

West Branch Herring Run at Idlewylde (IDLM2)

Unnamed Tributary at Harbor Point in Baltimore (IHBM2)

West Branch Susquehanna River at West Milton (ILTP1)

Indian River near Indian River Inlet (IN MLLW) (INRD1)

Buffalo Creek (PA) at Iron Bridge (IRNP1)

Irondequoit Creek at Rochester (IRON6)

Tioughnioga River at Itaska (ISKN6)

Jamaica Bay at Inwood (IN MLLW) (IWDN6)

Swatara Creek near Inwood (IWDP1)

North Branch Rancocas Creek at Iron Works Park Mount Holly (IWPN4)

West Fork River at Stonewall Jackson Lake (JACW2)

Cheat River at Job (JBOW2)

Dyberry Creek near Jadwin Reservoir (JDWP1)

Pine Creek at Jersey Mills (JEMP1)

West Branch Wading River at Jenkins (JENN4)

Tenmile Creek above Jefferson (JFRP1)

Jones Falls at Mount Washington in Baltimore (JFSM2)

Clarion River at Johnsonburg (JHNP1)

Conemaugh River at Johnstown (JHSP1)

Shenango River below Pymatuning Dam at Jamestown (JMSP1)

Jones Falls at Jones Falls Pumping Station in Baltimore (JONM2)

Genesee River at Jones Bridge (JONN6)

Blacklick Creek at Josephine (JOSP1)

Foster Branch near Joppatowne (JPAM2)

West Branch Susquehanna River at Jersey Shore (JRSP1)

Jones Falls at Baltimore Streetcar Museum in Baltimore (JSCM2)

Back Creek near Jones Springs (JSPW2)

West Branch Susquehanna River at Karthaus (KARP1)

West Canada Creek at Kast Bridge (KASN6)

Bullskin Run below Kabletown (KBLW2)

Great Kills Harbor at Great Kills (IN MLLW) (KILN6)

Loyalhanna Creek at Kingston (KINP1)

Unnamed Tributary near Kings Park West (KINV2)

West Branch Mahoning River at Kirwan Reservoir (KIRO1)

North Branch Potomac River at Kitzmiller (KITM2)

West Branch Mahoning River below M J Kirwan Dam (KITO1)

Allegheny River at Kinzua Dam Outflow (KIZP1)

Keuka Lake at Hammondsport (KKLN6)

Keuka Lake at Penn Yan (KKPN6)

Unnamed Tributary at Kingstowne Regional Pond (KNGV2)

Pymatuning Creek at Kinsman (KNSO1)

Red Clay Creek at Kennett Square (KNSP1)

Oak Orchard Creek near Kenyonville (KNVN6)

Central PA Dams Kinzua Dam on Allegheny River (KNZP1)

Little Neck Bay at Kings Point (IN MLLW) (KPTN6)

Raritan Bay at Keansburg (IN MLLW) (KSBN4)

Allegheny River at Kittanning Lock and Dam (KTTP1)

Johnson Creek (NY) at Kuckville (KUCN6)

Lawrence Brook at Weston Mills (LABN4)

Accotink Creek at Lake Accotink near Springfield (LACV2)

East Branch Paulins Kill near Lafayette (LAFN4)

Little Muncy Creek at Lairdsville (LAIP1)

Loyalhanna Creek at Latrobe (LATP1)

North Branch Metedeconk River at Lakewood (LAWN4)

Unnamed Tributary at Lake Braddock in Burke (LBDV2)

Little Gunpowder Falls at Laurel Brook (LBFM2)

Unnamed Tributary at Lake Barton in Burke (LBTV2)

Limestone Branch near Leesburg (LBUV2)

Western Run at Mount Washington in Baltimore (LCHM2)

Erie Canal above Lockport (LCPN6)

Cayuga Creek at Lancaster (LCSN6)

Linton Creek near Laurel Dale (LDLW2)

Delaware River at Lordville (LDVN6)

Little Delaware River above Delhi (LDWN6)

Tioga River at Lindley (LDYN6)

Mahoning River at Leavittsburg (LEAO1)

Collington Branch near Upper Marlboro / Leeland Road (LEEM2)

Goose Creek near Leesburg (LEEV2)

Tuscarawas River at Leesville Dam Pool (LELO1)

Niagara River at Lewiston (LEWN6)

Colvin Run at Lake Fairfax near Reston (LFFV2)

Schuylkill River at Landingville (LGVP1)

Loyalhanna Creek above Loyalhanna Dam Tail Water (LHDP1)

Lehigh River at Lehighton (LHTP1)

West Branch Susquehanna River at Lock Haven (LHVP1)

Unnamed Tributary above Northampton Lake Dam in Lake Arbor (LKAM2)

Unnamed Tributary below Northampton Lake Dam in Lake Arbor (LKDM2)

Occoquan River below Lake Jackson (LKJV2)

Jones Falls above Lake Roland Dam (LKRM2)

Bear Branch above Lake Laurel (LLBM2)

Cheat River below Lake Lynn (LLDP1)

Conesus Creek near Lakeville (LLLN6)

Cheat River at Lake Lynn Dam Pool (LLPW2)

Mahoning River at Lowellville (LLWO1)

South Run at Lake Mercer (LMRV2)

Little Muskingum at Bloomfield (LNBO1)

Conestoga River at Lancaster (LNCP1)

Lake Hopatcong at Landing (LNDN4)

Linden Creek at Linden (LNDP1)

Neshaminy Creek near Langhorne (LNGP1)

Beaver Dam Brook at Lincoln Park (LNPN4)

Saddle River at Lodi (LODN4)

East Branch Nimishillen Creek at Louisville (LOSO1)

Western Branch near Woodmore / Lottsford Road (LOTM2)

Loyalsock Creek at Loyalsockville (LOYP1)

Little Patuxent River near Guilford (LPGM2)

Patuxent River below Duckett Dam near Laurel (LPRM2)

Broad Run near Sterling (LRGV2)

Battle Run near Laurel Mills (LRLV2)

Tioughnioga River at Lisle (LSLN6)

Little Schoharie Creek near Middleburgh (LSMN6)

Unnamed Tributary above Largo Town Center Dam (LTCM2)

Passaic River at Little Falls (LTFN4)

Mohawk River at Little Falls (LTLN6)

Middle Island Creek at Little (LTLW2)

North Branch Potomac River at Luke (LUKM2)

Long Quarter Branch at Lutherville (LUTM2)

Tuscarawas River at Leesville Dam Tailwater (LVLO1)

French Creek above Lowville (LVLP1)

Onondaga Lake at Liverpool (LVRN6)

Piney Run (VA) near Lovettsville (LVTV2)

West Branch Susquehanna River at Lewisburg (LWBP1)

Delaware Bay at Lewes (IN MLLW) (LWSD1)

Juniata River at Lewistown (LWSP1)

Cowanesque River near Lawrenceville (LWVP1)

Lycoming Creek near Williamsport (LYCP1)

Loyalhanna Creek at Loyalhanna Dam Pool (LYLP1)

Lake Ontario at Golden Hill State Park (LYNN6)

Tionesta Creek near Lynch (LYNP1)

Bixler Run near Loysville (LYVP1)

Casselman River at Markleton (MAKP1)

West Conewago Creek near Manchester (MANP1)

Ramapo River at Mahwah (MAWN4)

Monongahela River at Maxwell Lock and Dam (lower pool) (MAXP1)

Corey Creek near Mainesburg (MBGP1)

Opequon Creek near Martinsburg (MBGW2)

Western Branch at Upper Marlboro / Marlboro Country Club (MBOM2)

Middle Island Creek near Middlebourne (MBRW2)

Crooked Creek below Catlin Hollow at Middlebury Center (MBYP1)

McDonalds Branch at McDonald's Branch (MCDN4)

Erie Canal near Macedon Lock 30 (MCDN6)

Robinson Run at McDonald (MCDP1)

South Fork Hughes River below Macfarlan (MCFW2)

Pequannock River at Macopin (MCPN4)

Maidens Choice Run at Wilhelm Park in Baltimore (MCRM2)

Little Mahoning Creek at McCormick (MCRP1)

West Branch Susquehanna River near Muncy (MCYP1)

Middle Brook at Burnt Mills (MDBN4)

Schoharie Creek at Middleburgh (MDBN6)

Goose Creek near Middleburg (MDLV2)

Dead Run near McLean (MDRV2)

Bound Brook at Middlesex (MDSN4)

Woodcock Creek at Woodcock Dam (MEAP1)

Southwest Branch Rancocas Creek at Medford (MEDN4)

French Creek at Meadville (MEDP1)

Assunpink Creek near Mercerville (MERN4)

Tioga River at Mansfield (MFDP1)

North Branch Patapsco River at Liberty Reservoir (MFEM2)

Raccoon Creek at Moffatts Mill (MFFP1)

Pequea Creek above Martic Forge (MFGP1)

Mongaup River at Mongaup Valley (MGPN6)

Beach Thorofare at Margate (IN MLLW) (MGTN4)

Monongahela River at Hilderbrand Lock and Dam (MGTW2)

Ohio River at Montgomery Lock and Dam (MGYP1)

Mahoning Creek at Mahoning Dam Tailwater (MHDP1)

Mahoning Creek at Mahoning Dam Pool (MHGP1)

Susquehanna River at Meshoppen (MHPP1)

Passaic River near Millington (MILN4)

Shenandoah River at Millville (MILW2)

Mosquito Creek at Mosquito Creek Lake (MISO1)

Collington Branch at Mitchellville (MITM2)

Millstone River at Millstone (MITN4)

Little Chiques Creek at Mt. Joy (MJYP1)

Mine Kill near North Blenheim (MKLN6)

Tygart Valley River at Mill Creek (MLLW2)

Unicorn Branch near Millington (MLTM2)

Spout Run near Millwood (MLWV2)

Genesee River at Mount Morris Dam (MMDN6)

Chiques Creek at Manheim (MNHP1)

Manor Kill at West Conesville near Gilboa (MNRN6)

Brodhead Creek at Minisink Hills (MNSP1)

Beech Creek at Monument (MNTP1)

Raritan River at Manville (MNVN4)

Muncy Creek at Muncy Creek (MNYP1)

West Branch Brandywine Creek at Modena (MODP1)

South Fork South Branch Potomac River near SF Moorefield (MOFW2)

North Fork Shenandoah River near Mount Jackson (MOJV2)

Molly Ann Brook at N. Haledon (MOLN4)

Towanda Creek at Monroeton (MONP1)

Moores Run at Moravia Park in Baltimore (MOOM2)

Monongahela River at Morgantown Lock and Dam (MORW2)

Allegheny River at Mosgrove Lock and Dam (MOSP1)

Ohio River at Moundsville (MOUW2)

South Mill Creek near Mozer (MOZW2)

Bull Run near Manassas Park (MPBV2)

Juniata River at Mapleton Depot (MPLP1)

Mosquito Creek near Greene Center (MQGO1)

Tenmile Creek at Mariana (MRAP1)

Cabin Branch near Upper Marlboro / Ritchie Marlboro Road (MRBM2)

Delaware River at Marcus Hook (IN MLLW) (MRCP1)

Monocacy River near Dickerson (MRDM2)

South Branch Potomac River near Moorefield (MRFW2)

East Branch Delaware River at Margaretville (MRGN6)

Morgan Run near Louisville (MRLM2)

Esopus Creek at Mount Marion (MRNN6)

West Branch Middle Brook near Martinsville (MRTN4)

Susquehanna River at Marietta (MRTP1)

Bald Eagle Creek at Milesburg (MSBP1)

Spring Creek at Milesburg (MSCP1)

Watson Creek at Manasquan (IN MLLW) (MSNN4)

Mosquito Creek below Mosquito Creek Lake (MSQO1)

Delaware River at Montague (MTGN4)

Mountain Creek near Pine Grove Furnace (MTKP1)

Barnegat Bay at Mantoloking (IN MLLW) (MTLN4)

Swatara Creek at Middletown (MTLP1)

Delaware River at Matamoras/Port Jervis (MTMP1)

Esopus Creek at Cold Brook (MTRN6)

Muddy Creek (PA) near Castle Fin (MUCP1)

Beaverdam Creek near Mountville (MUVV2)

Whetstone Creek at Mannington (MWRW2)

Big Spring Run near Mylin Corners (MYLP1)

Unnamed Tributary below New Alexandria Tide Gate (NADV2)

Hickey Run at National Arboretum (NAHD2)

Allegheny River at Natrona Lock and Dam (NATP1)

Northwest Branch Anacostia River at Brentwood MD (NBAM2)

North Branch Raritan River at North Branch Village (NBAN4)

Maidens Choice Run at Westgate in Baltimore (NBDM2)

Schoharie Creek near North Blenheim (NBHN6)

Delaware River at Newbold Island (IN MLLW) (NBLP1)

Schoharie Creek at North Blenheim (NBMN6)

Sugar Creek near Columbia Crossroads (NBSP1)

Shenango River at New Castle (NCSP1)

Ohio River at New Cumberland Lock and Dam (NCUW2)

Parker Hollow Run at Needmore (NDMW2)

Tonoloway Creek near Needmore (NEEP1)

Oneida Creek at Oneida (NEIN6)

White Clay Creek at Newark (NEKD1)

Shark River at Neptune City (NEPN4)

Neversink River at Godeffroy (NEVN6)

North Fork Goose Creek near Lincoln (NFGV2)

North Fork Hughes River near Cairo (NFHW2)

North Glade Run near Swanton (NGLM2)

Northrup Creek at North Greece (NGRN6)

East Branch Bass River at New Gretna (NGTN4)

Sandy Creek (WNY) at North Hamlin (NHLN6)

Delaware River at New Hope-Lambertville Bridge (NHPP1)

Nimishillen Creek at North Industry (NHSO1)

Greenwood Branch at New Lisbon (NLBN4)

Hackensack River at New Milford (NMLN4)

Maurice River at Norma (NORN4)

Christina River at Newport (IN MLLW) (NPTD1)

Juniata River at Newport (NPTP1)

Schuylkill River at Norristown (NRSP1)

South Branch Raritan River at Neshanic Station (NSNN4)

Walnut Creek near Erie (NUTP1)

Neversink River below Claryville (NVCN6)

Neversink River at Neversink Reservoir (NVRN6)

Neversink River below Neversink Reservoir (NVXN6)

Passaic River at Newark (IN MLLW) (NWKN4)

Smith Creek near New Market (NWMV2)

Mahoning River at Lake Milton (NWTO1)

Youghiogheny River near Oakland (OAKM2)

Occoquan River at VA-123 (OCRV2)

Deep Run at Old Bridge (ODBN4)

Lackawanna River at Old Forge (OFRP1)

Monongahela River at Opekiska Lock and Dam (OKKW2)

Ramapo River at Oakland (OKLN4)

Abram Creek at Oakmont (OKMW2)

Allegheny River at Olean (OLNN6)

Town Creek (MD) near Oldtown (OLTM2)

Great Egg Harbor Bay at Ocean City (IN MLLW) (ONCN4)

Onondaga Creek near Nedrow (ONDN6)

Onondaga Creek at Onondaga Flood Control Dam (ONFN6)

Youghiogheny River at Ohiopyle (OPLP1)

Oquaga Creek at McLure (OQGN6)

Pequannock River at Oak Ridge (ORGN4)

Oriskany Creek near Oriskany (ORKN6)

Lake Ontario at Oswego (NOS) (OSGN6)

Occoquan River above Occoquan Upper Dam (OUDV2)

Owego Creek near Owego (OWCN6)

Susquehanna River at Owego (OWGN6)

Owasco Lake at Moravia Inlet (OWIN6)

Owasco Lake near Auburn (OWSN6)

Arthur Kill at Perth Amboy (IN MLLW) (PABN4)

Schuylkill River at Philadelphia (PADP1)

Allegheny River at Port Allegany (PALP1)

Saddle River at Paramus (PARN4)

Allegheny River at Parker (PARP1)

Potomac River at Paw Paw (PAWW2)

Purcell Branch at Purcell Road (PBPV2)

Stony Brook at Princeton (PCTN4)

Little Pine Creek at Little Pine Dam (PDAP1)

North Branch Rancocas Creek at Pemberton (PEBN4)

Licking Creek at Pecktonville (PECM2)

East Branch Delaware River at Pepacton Reservoir (PEPN6)

Neshaminy Creek near Penns Park (PEPP1)

South Branch Potomac River near Petersburg (PETW2)

Swatara Creek near Pine Grove (PGVP1)

Eagle Creek (Trumbull Co) at Phalanx Station (PHAO1)

Delaware River at USCG Station Washington Street (IN MLLW) (PHBP1)

Schuylkill River near Philadelphia near 30th Street (PHDP1)

Tygart Valley River at Philippi (PHIW2)

Oswego River above Phoenix (PHXN6)

Green Pond Brook at Picatinny (PICN4)

Stillwater Creek at Piedmont Dam Pool (PIDO1)

Stillwater Creek at Piedmont Dam Tailwater (PIEO1)

Green Pond Brook below Picatinny Lake (PIKN4)

Passaic River at Pine Brook (PINN4)

Mantua Creek at Pitman (PITN4)

Lackawanna River at Parker St Bridge (PKIP1)

Platter Kill at Gilboa (PKLN6)

Hudson River near Poughkeepsie (PKMN6)

Pascack River at Park Ridge (PKRN4)

Gunpowder Falls near Parkton (PKTM2)

Pennypack Creek at Philadelphia (PLLP1)

Platte Kill at Dunraven (PLTN6)

Ramapo River at Pompton Lakes Dam (PLUN4)

Tulpehocken Creek at Blue Marsh Dam (PLVP1)

Cheat River above Cheat Lake - Inflow (PMAW2)

Bennett Creek at Park Mills (PMBM2)

Ramapo River at Lakseside Ave at Pompton Lakes (PMPN4)

Monongahela River at Point Marion Lock and Dam (lower pool) (PMRP1)

Hudson River at Piermont (PMTN6)

Lackawaxen River at Prompton Lake Dam (PMTP1)

Whippany River at Pine Brook (PNBN4)

Penns Creek at Penns Creek (PNCP1)

Clarion River at Piney Dam Tailwater (PNDP1)

Pine Creek at Etna (PNEP1)

Salmon River near Pineville (PNVN6)

Grand River at Painesville (PNVO1)

Mahoning Creek at Punxsutawney (PNXP1)

Ramapo River at Dawes Highway at Pompton Lakes (POMN4)

Potomac River at Point of Rocks (PORM2)

Tuscarora Creek near Port Royal (PORP1)

Dodge Creek (NY) above Portville (POTN6)

Ohio River at Powhatan Point (POWO1)

Pompton River at Pompton Plains (PPPN4)

Ramapo River at Pompton Lakes (PPTN4)

Pequest River at Pequest (PQTN4)

Pequea Creek at Paradise (PRDP1)

Patapsco River at Hollofield (PRHM2)

Mahoning River below Lake Milton at Pricetown (PRIO1)

Patuxent River at Avondale Street in Laurel (PRLM2)

West Branch Lackawaxen River at Prompton (PRMP1)

Patuxent River at 9th Street in Laurel (PRNM2)

Rocky Run near Tysons Corner (Pulte/McLean Regional Pond) (PRPV2)

Pohopoco Creek below Beltzville Lake at Parryville (PRRP1)

Price Run above Smithfield (PRRW2)

Genesee River at Portageville (PRTN6)

Patuxent River near Unity (PRUM2)

Muddy Creek above Portersville (PRVP1)

Pohopoco Creek at Beltzville Dam (PRYP1)

Piscataway Creek at Piscataway (PSCM2)

Cheat River at Parsons (PSNW2)

Lake Erie at Sturgeon Point (NOS) (PSTN6)

Unnamed Tributary at New Alexandria Pump Station - Upstream (PSUV2)

Schuylkill River at Pottstown (PTNP1)

Plumtree Run near Bel Air (PTRM2)

Ohio River at Pittsburgh (PTTP1)

Lamington (Black) River at Pottersville (PTVN4)

Schoharie Creek at Prattsville (PTVN6)

Mahoning Creek below Punxsutawney (PXSP1)

Quittapahilla Creek near Bellegrove (QCBP1)

Ramapo River at Ramapo (RAMN6)

Tonawanda Creek at Rapids (RAPN6)

Sevenmile Run near Rasselas (RASP1)

Red Clay Creek at Wooddale (RCCD1)

Rock Creek at Joyce Road in Washington (RCJD2)

Rock Creek at Sherrill Drive/DC (RCKD2)

Unadilla River at Rockdale (RCKN6)

Little Kanawha River above Rocksdale (RCKW2)

Lake Ontario at Rochester (NOS) (RCRN6)

Erie Canal above Rochester (RCSN6)

Swimming River at Red Bank (RDBN4)

Allegheny River at Red House (RDHN6)

Pequannock River at Riverdale (RDLN4)

Schuylkill River at Reading (RDRP1)

Delaware Bay at Reedy Point (IN MLLW) (RDYD1)

Clarion River at Ridgway (RDYP1)

Neshanic River at Reaville (REAN4)

Cocalico Creek at Ephrata (REAP1)

North Branch Salmon River at Redfield (REDN6)

Kishacoquillas Creek at Reedsville (REEP1)

Delaware River at Riegelsville (RGLN4)

Genesee River at Rochester (RHRN6)

Octoraro Creek near Richardsmere (RICM2)

Hackensack River at Rivervale (RIVN4)

Turkey Branch near Rockville (RKVM2)

East Rockaway Inlet at Atlantic Beach (IN MLLW) (RKWN6)

Lycoming Creek at Ralston (RLBP1)

Allegheny River at Rimer Lock and Dam (RMRP1)

Ohio River at Willow Island Lock (RNOO1)

Young Womans Creek near Renovo (RNOP1)

Piney Run at Reston (Northern Sector Pond 1) (RNSV2)

Big Sandy Creek at Rockville (ROCW2)

Oneida Lake at Brewerton (RODN6)

Genesee River at Rochester Ford St (ROHN6)

Rondout Creek at Rondout Rsvr (RONN6)

Pequea Creek near Ronks (RONP1)

Lycoming Creek at Roaring Branch Town (RORP1)

Rondout Creek at Rosendale (ROSN6)

West Branch Susquehanna River at Renovo (ROVP1)

Cheat River at Rowlesburg (ROWW2)

East Branch Delaware River at Roxbury (ROXN6)

Irondequoit Creek at Railroad Mills (RRMN6)

North Branch Raritan River near Raritan (RRTN4)

Deer Creek (MD) at Rocks State Park (RSPM2)

Conewango Creek at Russell (RSSP1)

Raystown Branch Juniata River near Huntingdon at Raystown Lake - Below Dam (RTBP1)

Central PA Dams Raystown Dam on Raystown Branch of Juniata River (RTDP1)

Northeast Branch Anacostia River at Riverdale (RVDM2)

West Branch Mahoning River above Ravenna (RVNO1)

Saddle River at Ridgewood (RWDN4)

Rahway River at Rahway (RWYN4)

Jamaica Bay at Rockaway Inlet (IN MLLW) (RWYN6)

Rabbit Branch at Royal Lake in Burke (RYLV2)

Antietam Creek near Sharpsburg (SACM2)

Sacandaga River at Conklingville - Gt Sac Lk (SACN6)

Saddle River at Upper Saddle River (SADN4)

Larrys Creek at Salladasburg (SALP1)

Manasquan River at Squankum (SAMN4)

Hawlings River near Sandy Spring (SANM2)

Ohio River above Sardis (SARO1)

Little Patuxent River near Savage (SAVM2)

Snakeden Branch above Lake Audobon (SBAV2)

Shrewsbury River at Sea Bright (IN MLLW) (SBIN4)

South Branch Raritan River at South Branch (SBNN4)

North Branch Raritan River at South Branch (SBRN4)

Manahawkin Bay at Ship Bottom (IN MLLW) (SBTN4)

Ohio River at Steubenville (SBVO1)

Oak Orchard Creek near Shelby (SBYN6)

Susquehanna River at Sunbury (SBYP1)

Mohawk River at Schenectady (Freeman's Bridge) (SCHN6)

Rockymarsh Run at Scrabble (SCRW2)

New Jersey Atlantic Coast at Sandy Hook (IN MLLW) (SDHN4)

Sluice Creek at S. Dennis (IN MLLW) (SDNN4)

Carrs Creek near Sidney Center (SDRN6)

Shrewsbury River at Rumson - Seabright (SEBN4)

Cohansey River at Seeley (SEEN4)

Seneca River near Seneca Falls (SEFN6)

Ramapo River at Suffern (SFFN6)

First Fork Sinnemahoning Creek near Sinnemahoning (SFFP1)

Sand Fork Creek above Sand Fork (SFKW2)

Price Run near Price Run (SFPW2)

South Fork Shenandoah River at Luray (SFSV2)

Codorus Creek at Spring Grove (SGVP1)

Great Channel at Stone Harbor (IN MLLW) (SHBN4)

Chenango River at Sherburne (SHBN6)

Shenango River at Shenango Dam Tailwater (SHDP1)

Potomac River at Shepherdstown (SHEW2)

Canaseraga Creek at Shakers Crossing (SHKN6)

Oswayo Creek at Shinglehouse (SHNP1)

Bush Kill at Shoemakers (SHOP1)

School House Pond at Upper Marlboro (SHPM2)

Shenango River at Shenango Dam Pool (SHPP1)

Allegheny River at Sharpsburg Lock and Dam (SHRP1)

Ludlum Thorofare at Sea Isle City (IN MLLW) (SICN4)

Susquehanna River at Sidney (SIDN6)

Passaic River at Singac (SIGN4)

White Clay Creek at Strickersville (SKVP1)

Skaneateles Creek near Skaneateles Jct (SKYN6)

Allegheny River at Salamanca (SLMN6)

Scotts Level Branch at Rockdale (SLRM2)

West Branch Delaware River at Stilesville (SLVN6)

Aughwick Creek at Shirleysburg (SLYP1)

Sherman Creek at Shermans Dale (SMDP1)

Little Patuxent River at Allview (SMPM2)

Peters Brook at Somerville (SMVN4)

Red Bank Creek at St Charles (SNCP1)

Sinnemahoning Creek at Sinnemahoning (SNNP1)

Dunkard Creek at Shannopin (SNPP1)

Lake Ontario at Sodus Point (SODN6)

Muncy Creek near Sonestown (SONP1)

Rahway River at Springfield (SPGN4)

Little Juniata River at Spruce Creek (SPKP1)

South Branch Potomac River near Springfield (SPRW2)

Manalapan Brook at Spotswood (SPTN4)

Slate Run at Old Church Rd (SRBV2)

Spruce Run at Clinton (SRCN4)

Savage River at Savage River Dam (SRDM2)

Spruce Run at Glen Gardner (SRGN4)

Spruce Run Reservoir at Clinton (SRRN4)

Driftwood Branch Sinnemahoning Creek at Sterling Run (SRRP1)

Jones Falls at Sorrento (SRTM2)

Youngs Branch at Manassas Battlefield (SRUV2)

Savage River near Bloomington (SRVM2)

Stony Brook at North Plainfield (STBN4)

Westecunk Creek at Stafford Forge (STFN4)

North Fork Shenandoah River near Strasburg (STGV2)

Lackawanna River at Stillwater Dam (STIP1)

Delaware River at Stockton (STKN4)

Red Clay Creek at Stanton (STND1)

Stony Run at Loyola University in Baltimore (STOM2)

Youghiogheny River at Sutersville (STSP1)

South Branch Raritan River at Stanton (STTN4)

Central PA Dams Stevenson Dam on First Fork Sinnemahoning Creek (STVP1)

North Branch Potomac River at Steyer (STYM2)

Sugar Creek at West Burlington (SUCP1)

Mahwah River at Suffern (SUFN6)

Elk River below Sutton Lake (SUSW2)

Elk River at Sutton Lake (SUTW2)

Oneida Lake at Sylvan Beach (SVBN6)

Great Egg Harbor River near Sicklerville (SVLN4)

Silver Creek (NY) at Silver Creek (SVRN6)

Raccoon Creek at SWEDESBORO (SWBN4)

Conemaugh River at Seward (SWDP1)

Swan Creek at Swan Creek (SWNM2)

East Branch Perkiomen Creek at Schwenksville (SWVP1)

Sixmile Creek at Brooktondale (SXBN6)

Sixmile Creek at Bethel Grove (SXMN6)

Raystown Branch Juniata River at Saxton (SXTP1)

Central PA Dams Sayers Dam on Bald Eagle Creek (SYDP1)

East Branch Fish Creek at Taberg (TABN6)

Assunpink Creek at Trenton (TACN4)

Little Stillwater Creek at Tappan Dam Pool (TAPO1)

Catoctin Creek at Taylorstown (TAYV2)

Chesapeake Bay at Tolchester Beach (IN MLLW) (TCBM2)

Towanda Creek at Franklindale (TCFP1)

Central PA Dams Tioga-Hammond Dam on Tioga River (TGAP1)

Tioga River at Tioga Junction (TGJP1)

Tygart Valley River at Tygart Lake (TGLW2)

Tioga River at Tioga (TGRP1)

Thatcher Brook at Gonawanda (THAN6)

Third River at Bloomfield (THRN4)

Deep Creek Lake near Thayerville (THYM2)

Tionesta Creek at Tionesta Dam Pool (TIOP1)

Northwest Branch Anacostia River at Adelphi Mill (TKMM2)

Sligo Creek near Takoma Park (TKPM2)

Delaware River at Tocks Island (TKSN4)

Little Egg Inlet at Tuckerton (IN MLLW) (TKTN4)

Toms River at Toms River (TMRN4)

Tunkhannock Creek at Tunkhannock (TNKP1)

Tionesta Creek at Tionesta Dam Tailwater (TNTP1)

Susquehanna River at Towanda (TOWP1)

Tremper Kill near Andes (TPKN6)

Little Stillwater Creek at Tappan Dam Tailwater (TPLO1)

Stillwater Creek at Tippecanoe (TPPO1)

Little Schuylkill River at Tamaqua (TQAP1)

Trout Creek (NY) near Trout Creek (TRCN6)

Delaware River at Trenton (TREN4)

Spring Creek (PA) at Trexlertown (TREP1)

Lycoming Creek near Trout Run (Camp Susque) (TRLP1)

Shenango River near Transfer (TRNP1)

Little Lehigh Creek near Trexlertown (TRXP1)

Tributary to Dead Run Tributary at Woodlawn (TTDM2)

Thompson Run at Turtle Creek (TTKP1)

Tuckahoe River at Tuckahoe (TUKN4)

Tulpehocken Creek near Reading (TULP1)

Tuscarora Creek above Martinsburg (TUSW2)

Mohawk River at Utica (UCAN6)

French Creek at Union City Dam (UCDP1)

French Creek above Union City Lake (UCTP1)

Jones Falls at Woodberry in Baltimore (UNAM2)

Unnamed Tributary to Big Spring Run near Willow Street (UNBP1)

Susquehanna River at Unadilla (UNDN6)

Western Branch at Upper Marlboro (UPRM2)

Laurel Hill Creek at Ursina (URSP1)

Stillwater Creek at Uhrichsville (URVO1)

French Creek at Utica (UTCP1)

Flat Branch near Unnamed Tributary At Amheast Drive (UTFV2)

Kiskiminetas River at Vandergrift (VGFP1)

South Branch Rancocas Creek at Vincentown (VNCN4)

Gwynns Falls at Villa Nova (VNVM2)

Peckman River at Verona (VRON4)

Susquehanna River at Vestal (VSTN6)

West Branch Delaware River at Walton (WALN6)

Sandy Creek at Waynesburg (WANO1)

Antietam Creek near Waynesboro (WANP1)

Wappingers Creek at Wappinger Falls (WAPN6)

Wapwallopen Creek near Wapwallopen (WAPP1)

East Fork Sinnemahoning Creek at Wharton Township (WARP1)

Washington Channel at SW Waterfront (IN MLLW) (WASD2)

Delaware River at Washington Crossing (WASN4)

Watts Branch at Washington (WATD2)

Barnegat Bay at Waretown (IN MLLW) (WATN4)

South Fork Catoctin Creek near Waterford (WATV2)

Accotink Creek at Woodburn Road / Strathmeade Springs (WBAV2)

Gwynns Falls at Washington Blvd in Baltimore (WBGM2)

West Branch Nimishillen Creek at North Canton (WBNO1)

Susquehanna River at Wilkes Barre (WBRP1)

Chagrin River at Willoughby (WBYO1)

West Conewago Creek at East Berlin (WCCP1)

Cedar Creek (VA) near Winchester (WCCV2)

Woodcock Creek at Woodcock Creek Dam Outflow (WCDP1)

Canisteo River at West Cameron (WCRN6)

West Branch Clarion River at Wilcox (WCXP1)

Dead Run Tributary near Woodlawn (WDLM2)

Dead Run at Woodlawn (WDNM2)

Salem River at Woodstown (WDTN4)

Lake Ontario at Ninemile Point (WEBN6)

Ohio River at Wellsburg (WELW2)

Cranberry Branch near Westminster (WESM2)

Kettle Creek near Westport (WESP1)

Millstone River at Weston (WETN4)

Cowanesque River at Westfield (WFDP1)

Chautauqua Creek near Westfield (WFLN6)

Wolftrap Creek at Besley Road near Wolf Trap (WFTV2)

Sideburn Branch at Woodglen Lake (WGLV2)

Sauquoit Creek at Whitesboro (WHBN6)

Wheeling Creek WV at Elm Grove (WHEW2)

Whippany River at Morristown (WHIN4)

Allegheny River at West Hickory (WHKP1)

Ohio River at Pike Island Lock and Dam (WHLW2)

Whitemarsh Run at White Marsh (WHMM2)

Lehigh River near F.E. Walter Dam (WHNP1)

Whippany River near Morristown (WHPN4)

First Fork Sinnemahoning Creek at Wharton (WHRP1)

South Branch Rockaway River at Whitehouse Station (WHTN4)

Lehigh River at White Haven (WHTP1)

Frankstown Branch Juniata River at Williamsburg (WIBP1)

Ellicott Creek below Williamsville (WILN6)

West Branch Susquehanna River at Williamsport (WILP1)

Christina River at Wilmington (IN MLLW) (WIMD1)

Otselic River at Whitney Point Dam (WITN6)

Little Kanawha River near Wildcat (WLDW2)

Ohio River at Wheeling (WLGW2)

West Fork River at Walkersville (WLKW2)

Potomac River at Williamsport (WLLM2)

Genesee River at Wellsville (WLLN6)

Redstone Creek at Waltersburg (WLTP1)

Ohio River at Wellsville (WLVO1)

Honeygo Run near White Marsh (WMHM2)

Brandywine Creek at Wilmington (WMND1)

Walnut Creek (NY) at Silver Creek (WNCN6)

North Fork Catoctin Creek near Waterford (WNFV2)

Wanaque River at Wanaque (WNQN4)

Lehigh River at Walnutport (WNTP1)

Hackensack River at West Nyack (WNYN6)

Dead Run Tributary at Woodlawn (WOLM2)

Patapsco River at Woodstock (WOOM2)

Horsepen Run above Oak Hill (West Ox Road Regional Pond) (WOXV2)

Beaver River at Wampum (WPMP1)

Unnamed Tributary near Middle River (WPRM2)

Wappasening Creek near Windham Center (WPSP1)

Hudson River at West Point (WPTN6)

Winters Run near Bel Air (WRBM2)

Wanaque River at Wanaque Reservoir elevation (WRDN4)

Turtle Creek at Wilmerding (WRDP1)

Waites Run near Wardensville (WRDW2)

Mahoning River at Warren (WRNO1)

Allegheny River at Warren (WRRP1)

Western Run at Western Run (WRWM2)

Oatka Creek at Warsaw (WRWN6)

Pascack River at Westwood (WSDN4)

Susquehanna River at Windsor (WSRN6)

Georges Creek near Franklin/Westernport (WSTM2)

Stony Brook at Watchung (WTCN4)

West Fork River at Weston (WTNW2)

French Creek at Wattsburg (WTTP1)

Pine Creek near Waterville (WTVP1)

Middle Island Creek near West Union (WUNW2)

Slippery Rock Creek at Wurtemburg (WURP1)

Chillisquaque Creek at Washingtonville (WVQP1)

Susquehanna River near Waverly (WVYN6)

West Brook at Walton (WWAN6)

Willowemoc Creek near Livingston Manor (WWMN6)

Yellow Creek at Hammonsville (YELO1)

Central PA Dams Youghiogheny Dam - Buttonhook (YGBP1)

Youghiogheny River below Youghiogheyny Dam - Outflow (Tailwater) (YGOP1)

Mahoning River at Youngstown (YGWO1)

Lower Niagara River at Youngstown (Fort Niagara) (YNTN6)

Codorus Creek near York (YRCP1)

Yards Creek near Blairstown (YRDN4)

Central PA Dams Indian Rock Dam on Codorus Creek (YRKP1)

Brokenstraw Creek at Youngsville (YVLP1)

Connoquenessing Creek at Zelienople (ZLPP1)