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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

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Hydrograph River at a Glance Download
Big Sandy Creek at Rockville Stage (ft)Flow (kcfs)Highest Observation: 3.73 ft at 11:45AM Sep 20, 2023Highest Observation: 3.73 ft at 12:00PM Sep 20, 2023Observed: 3.72 ft at 12:15PM Sep 20, 2023Observed: 3.72 ft at 12:30PM Sep 20, 2023Observed: 3.72 ft at 12:45PM Sep 20, 2023Observed: 3.72 ft at 1:00PM Sep 20, 2023Observed: 3.71 ft at 1:15PM Sep 20, 2023Observed: 3.71 ft at 1:30PM Sep 20, 2023Observed: 3.71 ft at 1:45PM Sep 20, 2023Observed: 3.71 ft at 2:00PM Sep 20, 2023Observed: 3.71 ft at 2:15PM Sep 20, 2023Observed: 3.7 ft at 2:30PM Sep 20, 2023Observed: 3.71 ft at 2:45PM Sep 20, 2023Observed: 3.7 ft at 3:00PM Sep 20, 2023Observed: 3.7 ft at 3:15PM Sep 20, 2023Observed: 3.7 ft at 3:30PM Sep 20, 2023Observed: 3.7 ft at 3:45PM Sep 20, 2023Observed: 3.69 ft at 4:00PM Sep 20, 2023Observed: 3.69 ft at 4:15PM Sep 20, 2023Observed: 3.69 ft at 4:30PM Sep 20, 2023Observed: 3.69 ft at 4:45PM Sep 20, 2023Observed: 3.69 ft at 5:00PM Sep 20, 2023Observed: 3.69 ft at 5:15PM Sep 20, 2023Observed: 3.68 ft at 5:30PM Sep 20, 2023Observed: 3.69 ft at 5:45PM Sep 20, 2023Observed: 3.68 ft at 6:00PM Sep 20, 2023Observed: 3.68 ft at 6:15PM Sep 20, 2023Observed: 3.68 ft at 6:30PM Sep 20, 2023Observed: 3.68 ft at 6:45PM Sep 20, 2023Observed: 3.68 ft at 7:00PM Sep 20, 2023Observed: 3.68 ft at 7:15PM Sep 20, 2023Observed: 3.68 ft at 7:45PM Sep 20, 2023Observed: 3.67 ft at 8:00PM Sep 20, 2023Observed: 3.67 ft at 8:15PM Sep 20, 2023Observed: 3.67 ft at 8:30PM Sep 20, 2023Observed: 3.67 ft at 8:45PM Sep 20, 2023Observed: 3.67 ft at 9:00PM Sep 20, 2023Observed: 3.67 ft at 9:15PM Sep 20, 2023Observed: 3.67 ft at 9:30PM Sep 20, 2023Observed: 3.67 ft at 9:45PM Sep 20, 2023Observed: 3.67 ft at 10:00PM Sep 20, 2023Observed: 3.66 ft at 10:15PM Sep 20, 2023Observed: 3.66 ft at 10:30PM Sep 20, 2023Observed: 3.66 ft at 10:45PM Sep 20, 2023Observed: 3.66 ft at 11:00PM Sep 20, 2023Observed: 3.66 ft at 11:15PM Sep 20, 2023Observed: 3.66 ft at 11:30PM Sep 20, 2023Observed: 3.66 ft at 11:45PM Sep 20, 2023Observed: 3.66 ft at 12:00AM Sep 21, 2023Observed: 3.66 ft at 12:15AM Sep 21, 2023Observed: 3.65 ft at 12:30AM Sep 21, 2023Observed: 3.65 ft at 12:45AM Sep 21, 2023Observed: 3.65 ft at 1:00AM Sep 21, 2023Observed: 3.65 ft at 1:15AM Sep 21, 2023Observed: 3.65 ft at 1:30AM Sep 21, 2023Observed: 3.64 ft at 1:45AM Sep 21, 2023Observed: 3.65 ft at 2:00AM Sep 21, 2023Observed: 3.64 ft at 2:15AM Sep 21, 2023Observed: 3.64 ft at 2:30AM Sep 21, 2023Observed: 3.64 ft at 2:45AM Sep 21, 2023Observed: 3.64 ft at 3:00AM Sep 21, 2023Observed: 3.63 ft at 3:15AM Sep 21, 2023Observed: 3.63 ft at 3:30AM Sep 21, 2023Observed: 3.63 ft at 3:45AM Sep 21, 2023Observed: 3.63 ft at 4:00AM Sep 21, 2023Observed: 3.63 ft at 4:15AM Sep 21, 2023Observed: 3.63 ft at 4:30AM Sep 21, 2023Observed: 3.63 ft at 4:45AM Sep 21, 2023Observed: 3.62 ft at 5:00AM Sep 21, 2023Observed: 3.62 ft at 5:15AM Sep 21, 2023Observed: 3.62 ft at 5:30AM Sep 21, 2023Observed: 3.62 ft at 5:45AM Sep 21, 2023Observed: 3.62 ft at 6:00AM Sep 21, 2023Observed: 3.62 ft at 6:15AM Sep 21, 2023Observed: 3.62 ft at 6:30AM Sep 21, 2023Observed: 3.62 ft at 6:45AM Sep 21, 2023Observed: 3.62 ft at 7:00AM Sep 21, 2023Observed: 3.62 ft at 7:15AM Sep 21, 2023Observed: 3.62 ft at 7:30AM Sep 21, 2023Observed: 3.62 ft at 7:45AM Sep 21, 2023Observed: 3.62 ft at 8:15AM Sep 21, 2023Observed: 3.62 ft at 8:30AM Sep 21, 2023Observed: 3.62 ft at 8:45AM Sep 21, 2023Observed: 3.62 ft at 9:00AM Sep 21, 2023Observed: 3.62 ft at 9:15AM Sep 21, 2023Observed: 3.62 ft at 9:30AM Sep 21, 2023Observed: 3.62 ft at 9:45AM Sep 21, 2023Observed: 3.62 ft at 10:00AM Sep 21, 2023Observed: 3.61 ft at 10:15AM Sep 21, 2023Observed: 3.61 ft at 10:30AM Sep 21, 2023Observed: 3.61 ft at 10:45AM Sep 21, 2023Observed: 3.61 ft at 11:00AM Sep 21, 2023Observed: 3.61 ft at 11:15AM Sep 21, 2023Observed: 3.61 ft at 11:30AM Sep 21, 2023Observed: 3.61 ft at 11:45AM Sep 21, 2023Observed: 3.61 ft at 12:00PM Sep 21, 2023Observed: 3.61 ft at 12:15PM Sep 21, 2023Observed: 3.61 ft at 12:30PM Sep 21, 2023Observed: 3.61 ft at 12:45PM Sep 21, 2023Observed: 3.61 ft at 1:00PM Sep 21, 2023Observed: 3.6 ft at 1:15PM Sep 21, 2023Observed: 3.6 ft at 1:30PM Sep 21, 2023Observed: 3.6 ft at 1:45PM Sep 21, 2023Observed: 3.6 ft at 2:00PM Sep 21, 2023Observed: 3.6 ft at 2:15PM Sep 21, 2023Observed: 3.59 ft at 2:30PM Sep 21, 2023Observed: 3.6 ft at 2:45PM Sep 21, 2023Observed: 3.59 ft at 3:00PM Sep 21, 2023Observed: 3.59 ft at 3:15PM Sep 21, 2023Observed: 3.59 ft at 3:30PM Sep 21, 2023Observed: 3.59 ft at 3:45PM Sep 21, 2023Observed: 3.59 ft at 4:00PM Sep 21, 2023Observed: 3.59 ft at 4:15PM Sep 21, 2023Observed: 3.58 ft at 4:30PM Sep 21, 2023Observed: 3.58 ft at 4:45PM Sep 21, 2023Observed: 3.58 ft at 5:00PM Sep 21, 2023Observed: 3.58 ft at 5:15PM Sep 21, 2023Observed: 3.57 ft at 5:30PM Sep 21, 2023Observed: 3.57 ft at 5:45PM Sep 21, 2023Observed: 3.57 ft at 6:00PM Sep 21, 2023Observed: 3.57 ft at 6:15PM Sep 21, 2023Observed: 3.57 ft at 6:30PM Sep 21, 2023Observed: 3.57 ft at 6:45PM Sep 21, 2023Observed: 3.57 ft at 7:00PM Sep 21, 2023Observed: 3.57 ft at 7:15PM Sep 21, 2023Observed: 3.57 ft at 7:30PM Sep 21, 2023Observed: 3.56 ft at 7:45PM Sep 21, 2023Observed: 3.56 ft at 8:00PM Sep 21, 2023Observed: 3.56 ft at 8:15PM Sep 21, 2023Observed: 3.56 ft at 8:30PM Sep 21, 2023Observed: 3.56 ft at 8:45PM Sep 21, 2023Observed: 3.56 ft at 9:00PM Sep 21, 2023Observed: 3.56 ft at 9:15PM Sep 21, 2023Observed: 3.56 ft at 9:30PM Sep 21, 2023Observed: 3.56 ft at 9:45PM Sep 21, 2023Observed: 3.56 ft at 10:00PM Sep 21, 2023Observed: 3.56 ft at 10:15PM Sep 21, 2023Observed: 3.55 ft at 10:30PM Sep 21, 2023Observed: 3.55 ft at 10:45PM Sep 21, 2023Observed: 3.56 ft at 11:00PM Sep 21, 2023Observed: 3.55 ft at 11:15PM Sep 21, 2023Observed: 3.55 ft at 11:30PM Sep 21, 2023Observed: 3.55 ft at 11:45PM Sep 21, 2023Observed: 3.55 ft at 12:15AM Sep 22, 2023Observed: 3.55 ft at 12:30AM Sep 22, 2023Observed: 3.55 ft at 12:45AM Sep 22, 2023Observed: 3.55 ft at 1:00AM Sep 22, 2023Observed: 3.55 ft at 1:15AM Sep 22, 2023Observed: 3.55 ft at 1:30AM Sep 22, 2023Observed: 3.54 ft at 1:45AM Sep 22, 2023Observed: 3.54 ft at 2:00AM Sep 22, 2023Observed: 3.54 ft at 2:15AM Sep 22, 2023Observed: 3.54 ft at 2:30AM Sep 22, 2023Observed: 3.54 ft at 2:45AM Sep 22, 2023Observed: 3.54 ft at 3:00AM Sep 22, 2023Observed: 3.54 ft at 3:15AM Sep 22, 2023Observed: 3.54 ft at 3:30AM Sep 22, 2023Observed: 3.54 ft at 3:45AM Sep 22, 2023Observed: 3.54 ft at 4:00AM Sep 22, 2023Observed: 3.54 ft at 4:15AM Sep 22, 2023Observed: 3.54 ft at 4:30AM Sep 22, 2023Observed: 3.54 ft at 4:45AM Sep 22, 2023Observed: 3.53 ft at 5:00AM Sep 22, 2023Observed: 3.53 ft at 5:15AM Sep 22, 2023Observed: 3.53 ft at 5:30AM Sep 22, 2023Observed: 3.53 ft at 5:45AM Sep 22, 2023Observed: 3.53 ft at 6:15AM Sep 22, 2023Observed: 3.53 ft at 6:30AM Sep 22, 2023Observed: 3.53 ft at 6:45AM Sep 22, 2023Observed: 3.53 ft at 7:00AM Sep 22, 2023Observed: 3.53 ft at 7:15AM Sep 22, 2023Observed: 3.53 ft at 7:30AM Sep 22, 2023Observed: 3.53 ft at 7:45AM Sep 22, 2023Observed: 3.53 ft at 8:00AM Sep 22, 2023Observed: 3.53 ft at 8:15AM Sep 22, 2023Observed: 3.53 ft at 8:30AM Sep 22, 2023Observed: 3.53 ft at 8:45AM Sep 22, 2023Observed: 3.53 ft at 9:00AM Sep 22, 2023Observed: 3.53 ft at 9:15AM Sep 22, 2023Observed: 3.53 ft at 9:30AM Sep 22, 2023Observed: 3.53 ft at 9:45AM Sep 22, 2023Observed: 3.53 ft at 10:00AM Sep 22, 2023Observed: 3.53 ft at 10:15AM Sep 22, 2023Observed: 3.53 ft at 10:30AM Sep 22, 2023Observed: 3.53 ft at 10:45AM Sep 22, 2023Observed: 3.53 ft at 11:00AM Sep 22, 2023Observed: 3.53 ft at 11:15AM Sep 22, 2023Observed: 3.53 ft at 11:30AM Sep 22, 2023Observed: 3.53 ft at 11:45AM Sep 22, 2023Observed: 3.53 ft at 12:00PM Sep 22, 2023Observed: 3.53 ft at 12:15PM Sep 22, 2023Observed: 3.53 ft at 12:30PM Sep 22, 2023Observed: 3.53 ft at 12:45PM Sep 22, 2023Observed: 3.52 ft at 1:00PM Sep 22, 2023Observed: 3.52 ft at 1:15PM Sep 22, 2023Observed: 3.52 ft at 1:30PM Sep 22, 2023Observed: 3.52 ft at 1:45PM Sep 22, 2023Observed: 3.52 ft at 2:00PM Sep 22, 2023Observed: 3.52 ft at 2:15PM Sep 22, 2023Observed: 3.52 ft at 2:30PM Sep 22, 2023Observed: 3.52 ft at 2:45PM Sep 22, 2023Observed: 3.51 ft at 3:00PM Sep 22, 2023Observed: 3.51 ft at 3:15PM Sep 22, 2023Observed: 3.51 ft at 3:30PM Sep 22, 2023Observed: 3.51 ft at 3:45PM Sep 22, 2023Observed: 3.51 ft at 4:00PM Sep 22, 2023Observed: 3.51 ft at 4:15PM Sep 22, 2023Observed: 3.51 ft at 4:30PM Sep 22, 2023Observed: 3.5 ft at 4:45PM Sep 22, 2023Observed: 3.5 ft at 5:00PM Sep 22, 2023Observed: 3.5 ft at 5:15PM Sep 22, 2023Observed: 3.5 ft at 5:30PM Sep 22, 2023Observed: 3.5 ft at 5:45PM Sep 22, 2023Observed: 3.5 ft at 6:00PM Sep 22, 2023Observed: 3.49 ft at 6:15PM Sep 22, 2023Observed: 3.49 ft at 6:30PM Sep 22, 2023Observed: 3.49 ft at 6:45PM Sep 22, 2023Observed: 3.49 ft at 7:00PM Sep 22, 2023Observed: 3.49 ft at 7:15PM Sep 22, 2023Observed: 3.49 ft at 7:30PM Sep 22, 2023Observed: 3.49 ft at 7:45PM Sep 22, 2023Observed: 3.49 ft at 8:00PM Sep 22, 2023Observed: 3.49 ft at 8:15PM Sep 22, 2023Observed: 3.48 ft at 8:30PM Sep 22, 2023Observed: 3.48 ft at 8:45PM Sep 22, 2023Observed: 3.48 ft at 9:00PM Sep 22, 2023Observed: 3.48 ft at 9:15PM Sep 22, 2023Observed: 3.48 ft at 9:30PM Sep 22, 2023Observed: 3.48 ft at 9:45PM Sep 22, 2023Observed: 3.48 ft at 10:00PM Sep 22, 2023Observed: 3.48 ft at 10:15PM Sep 22, 2023Observed: 3.48 ft at 10:30PM Sep 22, 2023Observed: 3.48 ft at 10:45PM Sep 22, 2023Observed: 3.48 ft at 11:00PM Sep 22, 2023Observed: 3.48 ft at 11:15PM Sep 22, 2023Observed: 3.47 ft at 11:30PM Sep 22, 2023Observed: 3.47 ft at 11:45PM Sep 22, 2023Observed: 3.47 ft at 12:00AM Sep 23, 2023Observed: 3.47 ft at 12:15AM Sep 23, 2023Observed: 3.47 ft at 12:30AM Sep 23, 2023Observed: 3.47 ft at 12:45AM Sep 23, 2023Observed: 3.47 ft at 1:00AM Sep 23, 2023Observed: 3.47 ft at 1:15AM Sep 23, 2023Observed: 3.47 ft at 1:30AM Sep 23, 2023Observed: 3.47 ft at 1:45AM Sep 23, 2023Observed: 3.47 ft at 2:00AM Sep 23, 2023Observed: 3.47 ft at 2:15AM Sep 23, 2023Observed: 3.47 ft at 2:30AM Sep 23, 2023Observed: 3.47 ft at 2:45AM Sep 23, 2023Observed: 3.47 ft at 3:00AM Sep 23, 2023Observed: 3.47 ft at 3:15AM Sep 23, 2023Observed: 3.46 ft at 3:30AM Sep 23, 2023Observed: 3.46 ft at 3:45AM Sep 23, 2023Observed: 3.46 ft at 4:00AM Sep 23, 2023Observed: 3.46 ft at 4:15AM Sep 23, 2023Observed: 3.46 ft at 4:30AM Sep 23, 2023Observed: 3.46 ft at 4:45AM Sep 23, 2023Observed: 3.46 ft at 5:00AM Sep 23, 2023Observed: 3.46 ft at 5:15AM Sep 23, 2023Observed: 3.46 ft at 5:30AM Sep 23, 2023Observed: 3.46 ft at 5:45AM Sep 23, 2023Observed: 3.46 ft at 6:00AM Sep 23, 2023Observed: 3.46 ft at 6:15AM Sep 23, 2023Observed: 3.46 ft at 6:30AM Sep 23, 2023Observed: 3.46 ft at 6:45AM Sep 23, 2023Observed: 3.46 ft at 7:00AM Sep 23, 2023Observed: 3.46 ft at 7:15AM Sep 23, 2023Observed: 3.46 ft at 7:30AM Sep 23, 2023Observed: 3.46 ft at 7:45AM Sep 23, 2023Observed: 3.46 ft at 8:15AM Sep 23, 2023Observed: 3.46 ft at 8:30AM Sep 23, 2023Observed: 3.46 ft at 8:45AM Sep 23, 2023Observed: 3.45 ft at 9:00AM Sep 23, 2023Observed: 3.46 ft at 9:15AM Sep 23, 2023Observed: 3.45 ft at 9:30AM Sep 23, 2023Observed: 3.46 ft at 9:45AM Sep 23, 2023Observed: 3.46 ft at 10:00AM Sep 23, 2023Observed: 3.46 ft at 10:15AM Sep 23, 2023Observed: 3.46 ft at 10:30AM Sep 23, 2023Observed: 3.46 ft at 10:45AM Sep 23, 2023Observed: 3.46 ft at 11:00AM Sep 23, 2023USGS--Water Resources of the United StatesROCW2(plotting HGIRG) Graph Created (11:33AM Sep 23, 2023)ObservedLatest observed value: 3.46 ft at 11:00 AM EDT 23-Sep-2023. Flood Stage is 17.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Big Sandy Creek at Rockville. Only observed stages are available for this point.
Return to Area Map
Downstream Gauge Downstream Gauge - at Lake Lynn Dam Pool
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 20
Flood Stage: 17.5
Action Stage: 14.4
Low Stage (in feet): 0

Historic Crests
(1) 18.00 ft on 07/24/1912
(2) 12.62 ft on 03/04/2015
(3) 12.56 ft on 03/01/2021
(4) 12.13 ft on 05/04/2009
(5) 11.99 ft on 07/29/2017
(6) 10.41 ft on 05/16/2014
(7) 10.34 ft on 02/12/2019
(8) 10.20 ft on 02/08/2019
(9) 10.03 ft on 09/28/2018
(10) 8.33 ft on 06/05/2008

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.56 ft on 03/01/2021
(2) 10.34 ft on 02/12/2019
(3) 10.20 ft on 02/08/2019
(4) 10.03 ft on 09/28/2018
(5) 11.99 ft on 07/29/2017
(6) 12.62 ft on 03/04/2015
(7) 10.41 ft on 05/16/2014
(8) 12.13 ft on 05/04/2009
(9) 8.33 ft on 06/05/2008
(10) 18.00 ft on 07/24/1912

(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
25 water reaches bridge deck on right downstream bank of bridge
20 water reaches bridge deck on left downstream bank of bridge
17.5 water Overflows Road on left downstram bank on bridge approach
13 water reaches natural bankfull on left downstream bank near gage
11.99 Water rises to the level reached on July 29, 2017.
Photos
(1) View of Rockville gage from across Big Sandy Creek.
(2) Downstream view of Big Sandy Creek from bridge.
(3) Upstream view of Big Sandy Creek from bridge.
About This Location Collapse

Latitude: 39.621667° N, Longitude: 79.705000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 17.5 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 1323.0 1340.5 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 1310 ft 1327.5 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 10 Day (NAEFS) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Pittsburgh Weather Forecast Office
192 Shafer Road
Moon Township, PA 15108
(412) 262-1591
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