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Hydrograph River at a Glance Download
Penobscot River above Grindstone Stage (ft)Flow (kcfs)Highest Observation: 5.64 ft at 12:45AM Jul 30, 2014Observed: 5.63 ft at 1:00AM Jul 30, 2014Observed: 5.63 ft at 1:15AM Jul 30, 2014Observed: 5.63 ft at 1:30AM Jul 30, 2014Observed: 5.62 ft at 1:45AM Jul 30, 2014Observed: 5.62 ft at 2:00AM Jul 30, 2014Observed: 5.61 ft at 2:15AM Jul 30, 2014Observed: 5.61 ft at 2:30AM Jul 30, 2014Observed: 5.61 ft at 2:45AM Jul 30, 2014Observed: 5.6 ft at 3:00AM Jul 30, 2014Observed: 5.6 ft at 3:15AM Jul 30, 2014Observed: 5.59 ft at 3:30AM Jul 30, 2014Observed: 5.59 ft at 3:45AM Jul 30, 2014Observed: 5.58 ft at 4:00AM Jul 30, 2014Observed: 5.58 ft at 4:15AM Jul 30, 2014Observed: 5.57 ft at 4:30AM Jul 30, 2014Observed: 5.57 ft at 4:45AM Jul 30, 2014Observed: 5.57 ft at 5:00AM Jul 30, 2014Observed: 5.56 ft at 5:15AM Jul 30, 2014Observed: 5.56 ft at 5:30AM Jul 30, 2014Observed: 5.55 ft at 5:45AM Jul 30, 2014Observed: 5.55 ft at 6:00AM Jul 30, 2014Observed: 5.55 ft at 6:15AM Jul 30, 2014Observed: 5.54 ft at 6:30AM Jul 30, 2014Observed: 5.54 ft at 6:45AM Jul 30, 2014Observed: 5.53 ft at 7:00AM Jul 30, 2014Observed: 5.53 ft at 7:15AM Jul 30, 2014Observed: 5.53 ft at 7:30AM Jul 30, 2014Observed: 5.53 ft at 7:45AM Jul 30, 2014Observed: 5.52 ft at 8:00AM Jul 30, 2014Observed: 5.52 ft at 8:15AM Jul 30, 2014Observed: 5.52 ft at 8:30AM Jul 30, 2014Observed: 5.51 ft at 8:45AM Jul 30, 2014Observed: 5.51 ft at 9:00AM Jul 30, 2014Observed: 5.51 ft at 9:15AM Jul 30, 2014Observed: 5.5 ft at 9:30AM Jul 30, 2014Observed: 5.5 ft at 9:45AM Jul 30, 2014Observed: 5.5 ft at 10:00AM Jul 30, 2014Observed: 5.5 ft at 10:15AM Jul 30, 2014Observed: 5.49 ft at 10:30AM Jul 30, 2014Observed: 5.48 ft at 10:45AM Jul 30, 2014Observed: 5.48 ft at 11:00AM Jul 30, 2014Observed: 5.48 ft at 11:15AM Jul 30, 2014Observed: 5.48 ft at 11:30AM Jul 30, 2014Observed: 5.48 ft at 11:45AM Jul 30, 2014Observed: 5.47 ft at 12:00PM Jul 30, 2014Observed: 5.47 ft at 12:15PM Jul 30, 2014Observed: 5.47 ft at 12:30PM Jul 30, 2014Observed: 5.47 ft at 12:45PM Jul 30, 2014Observed: 5.46 ft at 1:00PM Jul 30, 2014Observed: 5.46 ft at 1:15PM Jul 30, 2014Observed: 5.46 ft at 1:30PM Jul 30, 2014Observed: 5.45 ft at 1:45PM Jul 30, 2014Observed: 5.45 ft at 2:00PM Jul 30, 2014Observed: 5.45 ft at 2:15PM Jul 30, 2014Observed: 5.45 ft at 2:30PM Jul 30, 2014Observed: 5.45 ft at 2:45PM Jul 30, 2014Observed: 5.44 ft at 3:00PM Jul 30, 2014Observed: 5.44 ft at 3:15PM Jul 30, 2014Observed: 5.43 ft at 3:30PM Jul 30, 2014Observed: 5.43 ft at 3:45PM Jul 30, 2014Observed: 5.43 ft at 4:00PM Jul 30, 2014Observed: 5.43 ft at 4:15PM Jul 30, 2014Observed: 5.43 ft at 4:30PM Jul 30, 2014Observed: 5.42 ft at 4:45PM Jul 30, 2014Observed: 5.42 ft at 5:00PM Jul 30, 2014Observed: 5.42 ft at 5:15PM Jul 30, 2014Observed: 5.41 ft at 5:30PM Jul 30, 2014Observed: 5.41 ft at 5:45PM Jul 30, 2014Observed: 5.41 ft at 6:00PM Jul 30, 2014Observed: 5.41 ft at 6:15PM Jul 30, 2014Observed: 5.4 ft at 6:30PM Jul 30, 2014Observed: 5.4 ft at 6:45PM Jul 30, 2014Observed: 5.4 ft at 7:00PM Jul 30, 2014Observed: 5.4 ft at 7:15PM Jul 30, 2014Observed: 5.39 ft at 7:30PM Jul 30, 2014Observed: 5.39 ft at 7:45PM Jul 30, 2014Observed: 5.39 ft at 8:00PM Jul 30, 2014Observed: 5.39 ft at 8:15PM Jul 30, 2014Observed: 5.39 ft at 8:30PM Jul 30, 2014Observed: 5.38 ft at 8:45PM Jul 30, 2014Observed: 5.38 ft at 9:00PM Jul 30, 2014Observed: 5.38 ft at 9:15PM Jul 30, 2014Observed: 5.38 ft at 9:30PM Jul 30, 2014Observed: 5.37 ft at 9:45PM Jul 30, 2014Observed: 5.37 ft at 10:00PM Jul 30, 2014Observed: 5.37 ft at 10:15PM Jul 30, 2014Observed: 5.37 ft at 10:30PM Jul 30, 2014Observed: 5.36 ft at 10:45PM Jul 30, 2014Observed: 5.36 ft at 11:00PM Jul 30, 2014Observed: 5.36 ft at 11:15PM Jul 30, 2014Observed: 5.36 ft at 11:30PM Jul 30, 2014Observed: 5.36 ft at 11:45PM Jul 30, 2014Observed: 5.35 ft at 12:00AM Jul 31, 2014Observed: 5.35 ft at 12:15AM Jul 31, 2014Observed: 5.35 ft at 12:30AM Jul 31, 2014Observed: 5.35 ft at 12:45AM Jul 31, 2014Observed: 5.35 ft at 1:00AM Jul 31, 2014Observed: 5.34 ft at 1:15AM Jul 31, 2014Observed: 5.34 ft at 1:30AM Jul 31, 2014Observed: 5.34 ft at 1:45AM Jul 31, 2014Observed: 5.34 ft at 2:00AM Jul 31, 2014Observed: 5.34 ft at 2:15AM Jul 31, 2014Observed: 5.33 ft at 2:30AM Jul 31, 2014Observed: 5.33 ft at 2:45AM Jul 31, 2014Observed: 5.33 ft at 3:00AM Jul 31, 2014Observed: 5.33 ft at 3:15AM Jul 31, 2014Observed: 5.33 ft at 3:30AM Jul 31, 2014Observed: 5.32 ft at 3:45AM Jul 31, 2014Observed: 5.32 ft at 4:00AM Jul 31, 2014Observed: 5.32 ft at 4:15AM Jul 31, 2014Observed: 5.32 ft at 4:30AM Jul 31, 2014Observed: 5.32 ft at 4:45AM Jul 31, 2014Observed: 5.31 ft at 5:00AM Jul 31, 2014Observed: 5.31 ft at 5:15AM Jul 31, 2014Observed: 5.31 ft at 5:30AM Jul 31, 2014Observed: 5.31 ft at 5:45AM Jul 31, 2014Observed: 5.31 ft at 6:00AM Jul 31, 2014Observed: 5.31 ft at 6:15AM Jul 31, 2014Observed: 5.31 ft at 6:30AM Jul 31, 2014Observed: 5.31 ft at 6:45AM Jul 31, 2014Observed: 5.31 ft at 7:00AM Jul 31, 2014Observed: 5.31 ft at 7:15AM Jul 31, 2014Observed: 5.3 ft at 7:30AM Jul 31, 2014Observed: 5.3 ft at 7:45AM Jul 31, 2014Observed: 5.3 ft at 8:00AM Jul 31, 2014Observed: 5.3 ft at 8:15AM Jul 31, 2014Observed: 5.3 ft at 8:30AM Jul 31, 2014Observed: 5.3 ft at 8:45AM Jul 31, 2014Observed: 5.3 ft at 9:00AM Jul 31, 2014Observed: 5.29 ft at 9:15AM Jul 31, 2014Observed: 5.29 ft at 9:30AM Jul 31, 2014Observed: 5.29 ft at 9:45AM Jul 31, 2014Observed: 5.29 ft at 10:00AM Jul 31, 2014Observed: 5.29 ft at 10:15AM Jul 31, 2014Observed: 5.29 ft at 10:30AM Jul 31, 2014Observed: 5.29 ft at 10:45AM Jul 31, 2014Observed: 5.28 ft at 11:00AM Jul 31, 2014Observed: 5.28 ft at 11:15AM Jul 31, 2014Observed: 5.28 ft at 11:30AM Jul 31, 2014Observed: 5.28 ft at 11:45AM Jul 31, 2014Observed: 5.28 ft at 12:00PM Jul 31, 2014Observed: 5.28 ft at 12:15PM Jul 31, 2014Observed: 5.28 ft at 12:30PM Jul 31, 2014Observed: 5.27 ft at 12:45PM Jul 31, 2014Observed: 5.27 ft at 1:00PM Jul 31, 2014Observed: 5.27 ft at 1:15PM Jul 31, 2014Observed: 5.27 ft at 1:30PM Jul 31, 2014Observed: 5.27 ft at 1:45PM Jul 31, 2014Observed: 5.27 ft at 2:00PM Jul 31, 2014Observed: 5.27 ft at 2:15PM Jul 31, 2014Observed: 5.27 ft at 2:30PM Jul 31, 2014Observed: 5.27 ft at 2:45PM Jul 31, 2014Observed: 5.26 ft at 3:00PM Jul 31, 2014Observed: 5.26 ft at 3:15PM Jul 31, 2014Observed: 5.26 ft at 3:30PM Jul 31, 2014Observed: 5.26 ft at 3:45PM Jul 31, 2014Observed: 5.26 ft at 4:00PM Jul 31, 2014Observed: 5.26 ft at 4:15PM Jul 31, 2014Observed: 5.26 ft at 4:30PM Jul 31, 2014Observed: 5.26 ft at 4:45PM Jul 31, 2014Observed: 5.26 ft at 5:00PM Jul 31, 2014Observed: 5.26 ft at 5:15PM Jul 31, 2014Observed: 5.26 ft at 5:30PM Jul 31, 2014Observed: 5.25 ft at 5:45PM Jul 31, 2014Observed: 5.25 ft at 6:00PM Jul 31, 2014Observed: 5.25 ft at 6:15PM Jul 31, 2014Observed: 5.25 ft at 6:30PM Jul 31, 2014Observed: 5.25 ft at 6:45PM Jul 31, 2014Observed: 5.25 ft at 7:00PM Jul 31, 2014Observed: 5.25 ft at 7:15PM Jul 31, 2014Observed: 5.25 ft at 7:30PM Jul 31, 2014Observed: 5.25 ft at 7:45PM Jul 31, 2014Observed: 5.25 ft at 8:00PM Jul 31, 2014Observed: 5.24 ft at 8:15PM Jul 31, 2014Observed: 5.25 ft at 8:30PM Jul 31, 2014Observed: 5.25 ft at 8:45PM Jul 31, 2014Observed: 5.25 ft at 9:00PM Jul 31, 2014Observed: 5.24 ft at 9:15PM Jul 31, 2014Observed: 5.24 ft at 9:30PM Jul 31, 2014Observed: 5.24 ft at 9:45PM Jul 31, 2014Observed: 5.24 ft at 10:00PM Jul 31, 2014Observed: 5.24 ft at 10:15PM Jul 31, 2014Observed: 5.24 ft at 10:30PM Jul 31, 2014Observed: 5.24 ft at 10:45PM Jul 31, 2014Observed: 5.24 ft at 11:00PM Jul 31, 2014Observed: 5.24 ft at 11:15PM Jul 31, 2014Observed: 5.23 ft at 11:30PM Jul 31, 2014Observed: 5.23 ft at 11:45PM Jul 31, 2014Observed: 5.23 ft at 12:00AM Aug 01, 2014Observed: 5.23 ft at 12:15AM Aug 01, 2014Observed: 5.23 ft at 12:30AM Aug 01, 2014Observed: 5.23 ft at 12:45AM Aug 01, 2014Observed: 5.23 ft at 1:00AM Aug 01, 2014Observed: 5.23 ft at 1:15AM Aug 01, 2014Observed: 5.22 ft at 1:30AM Aug 01, 2014Observed: 5.22 ft at 1:45AM Aug 01, 2014Observed: 5.22 ft at 2:00AM Aug 01, 2014Observed: 5.22 ft at 2:15AM Aug 01, 2014Observed: 5.23 ft at 2:30AM Aug 01, 2014Observed: 5.22 ft at 2:45AM Aug 01, 2014Observed: 5.22 ft at 3:00AM Aug 01, 2014Observed: 5.22 ft at 3:15AM Aug 01, 2014Observed: 5.22 ft at 3:30AM Aug 01, 2014Observed: 5.22 ft at 3:45AM Aug 01, 2014Observed: 5.22 ft at 4:00AM Aug 01, 2014Observed: 5.22 ft at 4:15AM Aug 01, 2014Observed: 5.22 ft at 4:30AM Aug 01, 2014Observed: 5.21 ft at 4:45AM Aug 01, 2014Observed: 5.21 ft at 5:00AM Aug 01, 2014Observed: 5.21 ft at 5:15AM Aug 01, 2014Observed: 5.21 ft at 5:30AM Aug 01, 2014Observed: 5.21 ft at 5:45AM Aug 01, 2014Observed: 5.21 ft at 6:00AM Aug 01, 2014Observed: 5.21 ft at 6:15AM Aug 01, 2014Observed: 5.21 ft at 6:30AM Aug 01, 2014Observed: 5.21 ft at 6:45AM Aug 01, 2014Observed: 5.21 ft at 7:00AM Aug 01, 2014Observed: 5.21 ft at 7:15AM Aug 01, 2014Observed: 5.21 ft at 7:30AM Aug 01, 2014Observed: 5.21 ft at 7:45AM Aug 01, 2014Observed: 5.21 ft at 8:00AM Aug 01, 2014Observed: 5.21 ft at 8:15AM Aug 01, 2014Observed: 5.21 ft at 8:30AM Aug 01, 2014Observed: 5.21 ft at 8:45AM Aug 01, 2014Observed: 5.21 ft at 9:00AM Aug 01, 2014Observed: 5.21 ft at 9:15AM Aug 01, 2014Observed: 5.21 ft at 9:30AM Aug 01, 2014Observed: 5.21 ft at 9:45AM Aug 01, 2014Observed: 5.21 ft at 10:00AM Aug 01, 2014Observed: 5.21 ft at 10:15AM Aug 01, 2014Observed: 5.21 ft at 10:30AM Aug 01, 2014Observed: 5.21 ft at 10:45AM Aug 01, 2014Observed: 5.21 ft at 11:00AM Aug 01, 2014Observed: 5.2 ft at 11:15AM Aug 01, 2014Observed: 5.21 ft at 11:30AM Aug 01, 2014Observed: 5.21 ft at 11:45AM Aug 01, 2014Observed: 5.2 ft at 12:00PM Aug 01, 2014Observed: 5.2 ft at 12:15PM Aug 01, 2014Observed: 5.2 ft at 12:30PM Aug 01, 2014Observed: 5.2 ft at 12:45PM Aug 01, 2014Observed: 5.2 ft at 1:00PM Aug 01, 2014Observed: 5.2 ft at 1:15PM Aug 01, 2014Observed: 5.2 ft at 1:30PM Aug 01, 2014Observed: 5.2 ft at 1:45PM Aug 01, 2014Observed: 5.2 ft at 2:00PM Aug 01, 2014Observed: 5.19 ft at 2:15PM Aug 01, 2014Observed: 5.2 ft at 2:30PM Aug 01, 2014Observed: 5.19 ft at 2:45PM Aug 01, 2014Observed: 5.19 ft at 3:00PM Aug 01, 2014Observed: 5.19 ft at 3:15PM Aug 01, 2014Observed: 5.19 ft at 3:30PM Aug 01, 2014Observed: 5.19 ft at 3:45PM Aug 01, 2014Observed: 5.19 ft at 4:00PM Aug 01, 2014Observed: 5.19 ft at 4:15PM Aug 01, 2014Observed: 5.19 ft at 4:30PM Aug 01, 2014Observed: 5.18 ft at 5:45PM Aug 01, 2014Observed: 5.19 ft at 6:00PM Aug 01, 2014Observed: 5.19 ft at 6:15PM Aug 01, 2014Observed: 5.19 ft at 6:30PM Aug 01, 2014Observed: 5.19 ft at 6:45PM Aug 01, 2014Observed: 5.19 ft at 7:00PM Aug 01, 2014Observed: 5.18 ft at 7:15PM Aug 01, 2014Observed: 5.18 ft at 7:30PM Aug 01, 2014Observed: 5.18 ft at 7:45PM Aug 01, 2014Observed: 5.18 ft at 8:00PM Aug 01, 2014Observed: 5.18 ft at 8:15PM Aug 01, 2014Observed: 5.18 ft at 8:30PM Aug 01, 2014Observed: 5.18 ft at 8:45PM Aug 01, 2014Observed: 5.18 ft at 9:00PM Aug 01, 2014Observed: 5.18 ft at 9:15PM Aug 01, 2014Observed: 5.18 ft at 9:30PM Aug 01, 2014Observed: 5.17 ft at 9:45PM Aug 01, 2014Observed: 5.17 ft at 10:00PM Aug 01, 2014Observed: 5.18 ft at 10:15PM Aug 01, 2014Observed: 5.18 ft at 10:30PM Aug 01, 2014Observed: 5.18 ft at 10:45PM Aug 01, 2014Observed: 5.18 ft at 11:00PM Aug 01, 2014Observed: 5.18 ft at 11:15PM Aug 01, 2014Observed: 5.17 ft at 11:30PM Aug 01, 2014Highest Forecast: 5.2 ft 2:00AM Aug 02, 2014Highest Forecast: 5.2 ft 8:00AM Aug 02, 2014Forecast: 5.1 ft 2:00PM Aug 02, 2014Forecast: 5.1 ft 8:00PM Aug 02, 2014Forecast: 5.1 ft 2:00AM Aug 03, 2014Forecast: 5.1 ft 8:00AM Aug 03, 2014Forecast: 5.1 ft 2:00PM Aug 03, 2014Forecast: 5.1 ft 8:00PM Aug 03, 2014Forecast: 5.1 ft 2:00AM Aug 04, 2014Forecast: 5.1 ft 8:00AM Aug 04, 2014USGS--Water Resources of the United StatesGRNM1(plotting HGIRG) Graph Created (12:30AM Aug 2, 2014)ObservedForecast (issued 11:13AM Aug 1)Latest observed value: 5.17 ft at 11:30 PM EDT 1-Aug-2014. Flood Stage is 13 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Penobscot River above Grindstone are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at West Enfield
Flood Categories (in feet)
Major Flood Stage:16
Moderate Flood Stage:15
Flood Stage:13
Action Stage:10

Historical Crests
(1) 16.90 ft on 04/30/1923
(2) 15.02 ft on 04/30/2008
(3) 14.71 ft on 04/29/1973
(4) 14.30 ft on 09/29/1909
(5) 14.00 ft on 03/20/1936
(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
16 WIDESPREAD FLOODING OF STATE ROUTE 11 FROM GRINDSTONE TO MEDWAY. NUMEROUS HOMES, CAMPS AND CAMPGROUNDS INUNDATED. FLOODING AKIN TO APRIL 1923.
15 STATE ROUTE 11 FLOODED AND IMPASSABLE. HOMES/CAMPS INUNDATED.
13 STATE ROUTE 11 FLOODED IN PLACES. HOMES/CAMPS THREATENED.
12 ROUTE 11 IMPACTED, BUT PASSABLE.
10 MINOR LOWLAND FLOODING OCCURS.
About This Location Collapse

Latitude: 45.730278° N, Longitude: 68.589444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 13 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 29 294.74 ft 307.74 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:

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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
Caribou Weather Forecast Office
810 Main St.
Caribou, ME 04736
(207) 492-0170
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Page last modified: 16-Jul-2014 12:48 AM
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