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Hydrograph River at a Glance Download
Two Rivers River at Hallock Stage (ft)Flow (kcfs)Observed: 793.17 ft at 4:45AM Apr 16, 2024Observed: 793.16 ft at 5:00AM Apr 16, 2024Observed: 793.14 ft at 6:15AM Apr 16, 2024Observed: 793.14 ft at 6:30AM Apr 16, 2024Observed: 793.13 ft at 6:45AM Apr 16, 2024Observed: 793.12 ft at 7:00AM Apr 16, 2024Observed: 793.12 ft at 7:15AM Apr 16, 2024Observed: 793.12 ft at 7:30AM Apr 16, 2024Observed: 793.11 ft at 7:45AM Apr 16, 2024Observed: 793.11 ft at 8:00AM Apr 16, 2024Observed: 793.11 ft at 8:15AM Apr 16, 2024Observed: 793.1 ft at 8:30AM Apr 16, 2024Observed: 793.09 ft at 8:45AM Apr 16, 2024Observed: 793.09 ft at 9:00AM Apr 16, 2024Observed: 793.09 ft at 9:15AM Apr 16, 2024Observed: 793.09 ft at 9:30AM Apr 16, 2024Observed: 793.08 ft at 9:45AM Apr 16, 2024Observed: 793.08 ft at 10:00AM Apr 16, 2024Observed: 793.07 ft at 10:15AM Apr 16, 2024Observed: 793.07 ft at 10:30AM Apr 16, 2024Observed: 793.07 ft at 10:45AM Apr 16, 2024Observed: 793.07 ft at 11:00AM Apr 16, 2024Observed: 793.06 ft at 11:15AM Apr 16, 2024Observed: 793.05 ft at 11:30AM Apr 16, 2024Observed: 793.05 ft at 11:45AM Apr 16, 2024Observed: 793.05 ft at 12:00PM Apr 16, 2024Observed: 793.05 ft at 12:15PM Apr 16, 2024Observed: 793.04 ft at 12:30PM Apr 16, 2024Observed: 793.04 ft at 12:45PM Apr 16, 2024Observed: 793.03 ft at 1:00PM Apr 16, 2024Observed: 793.03 ft at 1:15PM Apr 16, 2024Observed: 793.03 ft at 1:30PM Apr 16, 2024Observed: 793.02 ft at 1:45PM Apr 16, 2024Observed: 793.02 ft at 2:00PM Apr 16, 2024Observed: 793.01 ft at 2:15PM Apr 16, 2024Observed: 793.01 ft at 2:30PM Apr 16, 2024Observed: 793.01 ft at 2:45PM Apr 16, 2024Observed: 793.01 ft at 3:00PM Apr 16, 2024Observed: 793.01 ft at 3:15PM Apr 16, 2024Observed: 793.01 ft at 3:30PM Apr 16, 2024Observed: 793.01 ft at 3:45PM Apr 16, 2024Observed: 793.01 ft at 4:00PM Apr 16, 2024Observed: 793.01 ft at 4:15PM Apr 16, 2024Observed: 793.01 ft at 4:30PM Apr 16, 2024Observed: 793.01 ft at 4:45PM Apr 16, 2024Observed: 793.01 ft at 5:00PM Apr 16, 2024Observed: 793.01 ft at 5:15PM Apr 16, 2024Observed: 793.01 ft at 5:30PM Apr 16, 2024Observed: 793 ft at 5:45PM Apr 16, 2024Observed: 793 ft at 6:00PM Apr 16, 2024Observed: 793 ft at 6:15PM Apr 16, 2024Observed: 793 ft at 6:30PM Apr 16, 2024Observed: 792.99 ft at 6:45PM Apr 16, 2024Observed: 792.99 ft at 7:00PM Apr 16, 2024Observed: 792.99 ft at 7:15PM Apr 16, 2024Observed: 792.98 ft at 7:30PM Apr 16, 2024Observed: 792.98 ft at 7:45PM Apr 16, 2024Observed: 792.98 ft at 8:00PM Apr 16, 2024Observed: 792.98 ft at 8:15PM Apr 16, 2024Observed: 792.98 ft at 8:30PM Apr 16, 2024Observed: 792.98 ft at 8:45PM Apr 16, 2024Observed: 792.98 ft at 9:00PM Apr 16, 2024Observed: 792.98 ft at 9:15PM Apr 16, 2024Observed: 792.98 ft at 9:30PM Apr 16, 2024Observed: 792.97 ft at 9:45PM Apr 16, 2024Observed: 792.97 ft at 10:00PM Apr 16, 2024Observed: 792.96 ft at 10:15PM Apr 16, 2024Observed: 792.96 ft at 10:30PM Apr 16, 2024Observed: 792.96 ft at 10:45PM Apr 16, 2024Observed: 792.95 ft at 11:00PM Apr 16, 2024Observed: 792.95 ft at 11:15PM Apr 16, 2024Observed: 792.95 ft at 11:30PM Apr 16, 2024Observed: 792.94 ft at 11:45PM Apr 16, 2024Observed: 792.94 ft at 12:00AM Apr 17, 2024Observed: 792.94 ft at 12:15AM Apr 17, 2024Observed: 792.93 ft at 12:30AM Apr 17, 2024Observed: 792.93 ft at 12:45AM Apr 17, 2024Observed: 792.93 ft at 1:00AM Apr 17, 2024Observed: 792.92 ft at 1:15AM Apr 17, 2024Observed: 792.92 ft at 1:30AM Apr 17, 2024Observed: 792.92 ft at 1:45AM Apr 17, 2024Observed: 792.91 ft at 2:00AM Apr 17, 2024Observed: 792.91 ft at 2:15AM Apr 17, 2024Observed: 792.91 ft at 2:30AM Apr 17, 2024Observed: 792.91 ft at 2:45AM Apr 17, 2024Observed: 792.9 ft at 3:00AM Apr 17, 2024Observed: 792.9 ft at 3:15AM Apr 17, 2024Observed: 792.9 ft at 3:30AM Apr 17, 2024Observed: 792.9 ft at 3:45AM Apr 17, 2024Observed: 792.9 ft at 4:00AM Apr 17, 2024Observed: 792.9 ft at 4:15AM Apr 17, 2024Observed: 792.9 ft at 4:30AM Apr 17, 2024Observed: 792.9 ft at 4:45AM Apr 17, 2024Observed: 792.9 ft at 5:00AM Apr 17, 2024Observed: 792.9 ft at 5:15AM Apr 17, 2024Observed: 792.9 ft at 5:30AM Apr 17, 2024Observed: 792.9 ft at 5:45AM Apr 17, 2024Observed: 792.91 ft at 6:00AM Apr 17, 2024Observed: 792.93 ft at 6:15AM Apr 17, 2024Observed: 792.95 ft at 6:30AM Apr 17, 2024Observed: 792.95 ft at 6:45AM Apr 17, 2024Observed: 792.95 ft at 7:00AM Apr 17, 2024Observed: 792.94 ft at 7:15AM Apr 17, 2024Observed: 792.93 ft at 7:30AM Apr 17, 2024Observed: 792.92 ft at 7:45AM Apr 17, 2024Observed: 792.92 ft at 8:00AM Apr 17, 2024Observed: 792.91 ft at 8:15AM Apr 17, 2024Observed: 792.9 ft at 8:30AM Apr 17, 2024Observed: 792.9 ft at 8:45AM Apr 17, 2024Observed: 792.89 ft at 9:00AM Apr 17, 2024Observed: 792.89 ft at 9:15AM Apr 17, 2024Observed: 792.88 ft at 9:30AM Apr 17, 2024Observed: 792.88 ft at 9:45AM Apr 17, 2024Observed: 792.88 ft at 10:00AM Apr 17, 2024Observed: 792.88 ft at 10:15AM Apr 17, 2024Observed: 792.87 ft at 10:30AM Apr 17, 2024Observed: 792.87 ft at 10:45AM Apr 17, 2024Observed: 792.87 ft at 11:00AM Apr 17, 2024Observed: 792.87 ft at 11:15AM Apr 17, 2024Observed: 792.87 ft at 11:30AM Apr 17, 2024Observed: 792.86 ft at 11:45AM Apr 17, 2024Observed: 792.86 ft at 12:00PM Apr 17, 2024Observed: 792.86 ft at 12:15PM Apr 17, 2024Observed: 792.86 ft at 12:30PM Apr 17, 2024Observed: 792.85 ft at 12:45PM Apr 17, 2024Observed: 792.85 ft at 1:00PM Apr 17, 2024Observed: 792.85 ft at 1:15PM Apr 17, 2024Observed: 792.85 ft at 1:30PM Apr 17, 2024Observed: 792.85 ft at 1:45PM Apr 17, 2024Observed: 792.84 ft at 2:00PM Apr 17, 2024Observed: 792.84 ft at 2:15PM Apr 17, 2024Observed: 792.84 ft at 2:30PM Apr 17, 2024Observed: 792.84 ft at 2:45PM Apr 17, 2024Observed: 792.84 ft at 3:00PM Apr 17, 2024Observed: 792.84 ft at 3:15PM Apr 17, 2024Observed: 792.84 ft at 3:30PM Apr 17, 2024Observed: 792.83 ft at 3:45PM Apr 17, 2024Observed: 792.83 ft at 4:00PM Apr 17, 2024Observed: 792.83 ft at 4:15PM Apr 17, 2024Observed: 792.83 ft at 4:30PM Apr 17, 2024Observed: 792.83 ft at 4:45PM Apr 17, 2024Observed: 792.84 ft at 5:00PM Apr 17, 2024Observed: 792.84 ft at 5:15PM Apr 17, 2024Observed: 792.85 ft at 5:30PM Apr 17, 2024Observed: 792.86 ft at 5:45PM Apr 17, 2024Observed: 792.87 ft at 6:00PM Apr 17, 2024Observed: 792.88 ft at 6:15PM Apr 17, 2024Observed: 792.89 ft at 6:30PM Apr 17, 2024Observed: 792.91 ft at 6:45PM Apr 17, 2024Observed: 792.92 ft at 7:00PM Apr 17, 2024Observed: 792.94 ft at 7:15PM Apr 17, 2024Observed: 792.96 ft at 7:30PM Apr 17, 2024Observed: 792.98 ft at 7:45PM Apr 17, 2024Observed: 793 ft at 8:00PM Apr 17, 2024Observed: 793.01 ft at 8:15PM Apr 17, 2024Observed: 793.03 ft at 8:30PM Apr 17, 2024Observed: 793.05 ft at 8:45PM Apr 17, 2024Observed: 793.07 ft at 9:00PM Apr 17, 2024Observed: 793.09 ft at 9:15PM Apr 17, 2024Observed: 793.1 ft at 9:30PM Apr 17, 2024Observed: 793.12 ft at 9:45PM Apr 17, 2024Observed: 793.14 ft at 10:00PM Apr 17, 2024Observed: 793.15 ft at 10:15PM Apr 17, 2024Observed: 793.17 ft at 10:30PM Apr 17, 2024Observed: 793.19 ft at 10:45PM Apr 17, 2024Observed: 793.2 ft at 11:00PM Apr 17, 2024Observed: 793.22 ft at 11:15PM Apr 17, 2024Observed: 793.23 ft at 11:30PM Apr 17, 2024Observed: 793.24 ft at 11:45PM Apr 17, 2024Observed: 793.26 ft at 12:00AM Apr 18, 2024Observed: 793.27 ft at 12:15AM Apr 18, 2024Observed: 793.28 ft at 12:30AM Apr 18, 2024Observed: 793.29 ft at 12:45AM Apr 18, 2024Observed: 793.3 ft at 1:00AM Apr 18, 2024Observed: 793.31 ft at 1:15AM Apr 18, 2024Observed: 793.32 ft at 1:30AM Apr 18, 2024Observed: 793.33 ft at 1:45AM Apr 18, 2024Observed: 793.34 ft at 2:00AM Apr 18, 2024Observed: 793.35 ft at 2:15AM Apr 18, 2024Observed: 793.36 ft at 2:30AM Apr 18, 2024Observed: 793.37 ft at 2:45AM Apr 18, 2024Observed: 793.38 ft at 3:00AM Apr 18, 2024Observed: 793.38 ft at 3:15AM Apr 18, 2024Observed: 793.39 ft at 3:30AM Apr 18, 2024Observed: 793.39 ft at 3:45AM Apr 18, 2024Observed: 793.4 ft at 4:00AM Apr 18, 2024Observed: 793.41 ft at 4:15AM Apr 18, 2024Observed: 793.41 ft at 4:30AM Apr 18, 2024Observed: 793.42 ft at 4:45AM Apr 18, 2024Observed: 793.42 ft at 5:00AM Apr 18, 2024Observed: 793.43 ft at 5:15AM Apr 18, 2024Observed: 793.43 ft at 5:30AM Apr 18, 2024Observed: 793.44 ft at 5:45AM Apr 18, 2024Observed: 793.45 ft at 6:00AM Apr 18, 2024Observed: 793.45 ft at 6:15AM Apr 18, 2024Observed: 793.45 ft at 6:30AM Apr 18, 2024Observed: 793.46 ft at 6:45AM Apr 18, 2024Observed: 793.46 ft at 7:00AM Apr 18, 2024Observed: 793.46 ft at 7:15AM Apr 18, 2024Observed: 793.47 ft at 7:30AM Apr 18, 2024Observed: 793.47 ft at 7:45AM Apr 18, 2024Observed: 793.47 ft at 8:00AM Apr 18, 2024Observed: 793.48 ft at 8:15AM Apr 18, 2024Observed: 793.48 ft at 8:30AM Apr 18, 2024Observed: 793.48 ft at 8:45AM Apr 18, 2024Observed: 793.48 ft at 9:00AM Apr 18, 2024Observed: 793.48 ft at 9:15AM Apr 18, 2024Observed: 793.48 ft at 9:30AM Apr 18, 2024Observed: 793.49 ft at 9:45AM Apr 18, 2024Observed: 793.49 ft at 10:00AM Apr 18, 2024Observed: 793.49 ft at 10:15AM Apr 18, 2024Observed: 793.49 ft at 10:30AM Apr 18, 2024Observed: 793.49 ft at 10:45AM Apr 18, 2024Observed: 793.49 ft at 11:00AM Apr 18, 2024Highest Observation: 793.5 ft at 11:15AM Apr 18, 2024Observed: 793.49 ft at 11:30AM Apr 18, 2024Highest Observation: 793.5 ft at 11:45AM Apr 18, 2024Highest Observation: 793.5 ft at 12:00PM Apr 18, 2024Highest Observation: 793.5 ft at 12:15PM Apr 18, 2024Highest Observation: 793.5 ft at 12:30PM Apr 18, 2024Highest Observation: 793.5 ft at 12:45PM Apr 18, 2024Highest Observation: 793.5 ft at 1:00PM Apr 18, 2024Highest Observation: 793.5 ft at 1:15PM Apr 18, 2024Highest Observation: 793.5 ft at 1:30PM Apr 18, 2024Highest Observation: 793.5 ft at 1:45PM Apr 18, 2024Highest Observation: 793.5 ft at 2:00PM Apr 18, 2024Highest Observation: 793.5 ft at 2:15PM Apr 18, 2024Highest Observation: 793.5 ft at 2:30PM Apr 18, 2024Observed: 793.49 ft at 2:45PM Apr 18, 2024Observed: 793.49 ft at 3:00PM Apr 18, 2024Observed: 793.49 ft at 3:15PM Apr 18, 2024Observed: 793.49 ft at 3:30PM Apr 18, 2024Observed: 793.49 ft at 3:45PM Apr 18, 2024Observed: 793.49 ft at 4:00PM Apr 18, 2024Observed: 793.49 ft at 4:15PM Apr 18, 2024Observed: 793.48 ft at 4:30PM Apr 18, 2024Observed: 793.48 ft at 4:45PM Apr 18, 2024Observed: 793.48 ft at 5:00PM Apr 18, 2024Observed: 793.48 ft at 5:15PM Apr 18, 2024Observed: 793.48 ft at 5:30PM Apr 18, 2024Observed: 793.48 ft at 5:45PM Apr 18, 2024Observed: 793.47 ft at 6:00PM Apr 18, 2024Observed: 793.47 ft at 6:15PM Apr 18, 2024Observed: 793.46 ft at 6:30PM Apr 18, 2024Observed: 793.46 ft at 6:45PM Apr 18, 2024Observed: 793.46 ft at 7:00PM Apr 18, 2024Observed: 793.45 ft at 7:15PM Apr 18, 2024Observed: 793.45 ft at 7:30PM Apr 18, 2024Observed: 793.45 ft at 7:45PM Apr 18, 2024Observed: 793.44 ft at 8:00PM Apr 18, 2024Observed: 793.44 ft at 8:15PM Apr 18, 2024Observed: 793.43 ft at 8:30PM Apr 18, 2024Observed: 793.43 ft at 8:45PM Apr 18, 2024Observed: 793.42 ft at 9:00PM Apr 18, 2024Observed: 793.42 ft at 9:15PM Apr 18, 2024Observed: 793.41 ft at 9:30PM Apr 18, 2024Observed: 793.4 ft at 9:45PM Apr 18, 2024Observed: 793.4 ft at 10:00PM Apr 18, 2024Observed: 793.39 ft at 10:15PM Apr 18, 2024Observed: 793.39 ft at 10:30PM Apr 18, 2024Observed: 793.38 ft at 10:45PM Apr 18, 2024Observed: 793.38 ft at 11:00PM Apr 18, 2024Observed: 793.37 ft at 11:15PM Apr 18, 2024Observed: 793.37 ft at 11:30PM Apr 18, 2024Observed: 793.36 ft at 11:45PM Apr 18, 2024Observed: 793.36 ft at 12:00AM Apr 19, 2024Observed: 793.35 ft at 12:15AM Apr 19, 2024Observed: 793.34 ft at 12:30AM Apr 19, 2024Observed: 793.34 ft at 12:45AM Apr 19, 2024Observed: 793.33 ft at 1:00AM Apr 19, 2024Observed: 793.33 ft at 1:15AM Apr 19, 2024Observed: 793.32 ft at 1:30AM Apr 19, 2024Observed: 793.32 ft at 1:45AM Apr 19, 2024Observed: 793.31 ft at 2:00AM Apr 19, 2024Observed: 793.3 ft at 2:15AM Apr 19, 2024Observed: 793.3 ft at 2:30AM Apr 19, 2024Observed: 793.29 ft at 2:45AM Apr 19, 2024Observed: 793.28 ft at 3:00AM Apr 19, 2024Observed: 793.28 ft at 3:15AM Apr 19, 2024Observed: 793.28 ft at 3:30AM Apr 19, 2024Observed: 793.27 ft at 3:45AM Apr 19, 2024Observed: 793.26 ft at 4:00AM Apr 19, 2024Minnesota DNRHLLM5(plotting HGIRG) Graph Created (4:34AM Apr 19, 2024)ObservedLatest observed value: 793.26 ft at 4:00 AM CDT 19-Apr-2024. Flood Stage is 802 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
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Datum: Not Available
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Two Rivers River at Hallock are issued as needed during times of high water, but are not routinely available.

Vertical Datum references a local datum

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Upstream Gauge - at Lake Bronson Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 810
Moderate Flood Stage: 806
Flood Stage: 802
Action Stage: 800
Low Stage (in feet): -9999

Historic Crests
(1) 810.70 ft on 04/21/1997
(2) 810.26 ft on 05/30/2010
(3) 809.50 ft on 04/23/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 807.19 ft on 05/01/2022 (P)
(2) 796.84 ft on 05/22/2021 (P)
(3) 808.51 ft on 04/03/2020 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
814 Top of Dike, Reach 2, south end of cemetery, 6th St S.
813 Top of Dike, Reach 3, north end of cemetery, by 4th St S.
812 Top of Dike, Reach 4, north of TH175. 100-yr flood elevation at TH175.
810 MAJOR FLOOD STAGE.
809 City crews manning pumps and checking lift stations.
808 Storm sewer valve at Reach 3 (north cemetery) is closed.
807 Storm sewer valves at 175 bridge, 4th St S, and the cemetery are closed and portable pumps are set up.
806 MODERATE FLOOD STAGE. Storm sewers start backing up. Storm sewer valve at TH175 bridge closed. Lift pump inspected.
804.5 Backup at Reach 2 Dike, cemetery road at 6th St S. Shut storm valve.
802 MINOR FLOOD STAGE. Hallock Dam spillway at Gilbert Park closed to the public. Culverts with flappers are checked.
800 ACTION STAGE/FORECAST SERVICE STAGE. Hallock Dam spillway at Gilbert Park begins to flow.
797 City takes precautionary actions.
About This Location Collapse

Latitude: 48.775556° N, Longitude: 96.937500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 802 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0 ft 802 ft Assumed Minnesota DNR zero datum Subtract 0.152 ft to get NGVD29 or add 0.864 ft to get NAVD88

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Eastern North Dakota/Grand Forks Weather Forecast Office
4797 Technology Circle
Grand Forks, ND 58203
(701) 772-0720
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