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Hydrograph River at a Glance Download
Penobscot River above Grindstone Stage (ft)Flow (kcfs)Observed: 6.91 ft at 7:00PM Oct 17, 2014Observed: 6.94 ft at 7:15PM Oct 17, 2014Observed: 6.96 ft at 7:30PM Oct 17, 2014Observed: 6.99 ft at 7:45PM Oct 17, 2014Observed: 7.02 ft at 8:00PM Oct 17, 2014Observed: 7.04 ft at 8:15PM Oct 17, 2014Observed: 7.05 ft at 8:30PM Oct 17, 2014Observed: 7.07 ft at 8:45PM Oct 17, 2014Observed: 7.08 ft at 9:00PM Oct 17, 2014Observed: 7.1 ft at 9:15PM Oct 17, 2014Observed: 7.11 ft at 9:30PM Oct 17, 2014Observed: 7.12 ft at 9:45PM Oct 17, 2014Observed: 7.13 ft at 10:00PM Oct 17, 2014Observed: 7.14 ft at 10:15PM Oct 17, 2014Observed: 7.14 ft at 10:30PM Oct 17, 2014Observed: 7.14 ft at 10:45PM Oct 17, 2014Highest Observation: 7.15 ft at 11:00PM Oct 17, 2014Highest Observation: 7.15 ft at 11:15PM Oct 17, 2014Highest Observation: 7.15 ft at 11:30PM Oct 17, 2014Highest Observation: 7.15 ft at 11:45PM Oct 17, 2014Highest Observation: 7.15 ft at 12:00AM Oct 18, 2014Highest Observation: 7.15 ft at 12:15AM Oct 18, 2014Observed: 7.14 ft at 12:30AM Oct 18, 2014Observed: 7.14 ft at 12:45AM Oct 18, 2014Observed: 7.13 ft at 1:00AM Oct 18, 2014Observed: 7.13 ft at 1:15AM Oct 18, 2014Observed: 7.12 ft at 1:30AM Oct 18, 2014Observed: 7.12 ft at 1:45AM Oct 18, 2014Observed: 7.11 ft at 2:00AM Oct 18, 2014Observed: 7.1 ft at 2:15AM Oct 18, 2014Observed: 7.09 ft at 2:30AM Oct 18, 2014Observed: 7.08 ft at 2:45AM Oct 18, 2014Observed: 7.07 ft at 3:00AM Oct 18, 2014Observed: 7.07 ft at 3:15AM Oct 18, 2014Observed: 7.06 ft at 3:30AM Oct 18, 2014Observed: 7.05 ft at 3:45AM Oct 18, 2014Observed: 7.04 ft at 4:00AM Oct 18, 2014Observed: 7.03 ft at 4:15AM Oct 18, 2014Observed: 7.02 ft at 4:30AM Oct 18, 2014Observed: 7.01 ft at 4:45AM Oct 18, 2014Observed: 7 ft at 5:00AM Oct 18, 2014Observed: 6.99 ft at 5:15AM Oct 18, 2014Observed: 6.98 ft at 5:30AM Oct 18, 2014Observed: 6.97 ft at 5:45AM Oct 18, 2014Observed: 6.95 ft at 6:00AM Oct 18, 2014Observed: 6.94 ft at 6:15AM Oct 18, 2014Observed: 6.93 ft at 6:30AM Oct 18, 2014Observed: 6.92 ft at 6:45AM Oct 18, 2014Observed: 6.91 ft at 7:00AM Oct 18, 2014Observed: 6.9 ft at 7:15AM Oct 18, 2014Observed: 6.89 ft at 7:30AM Oct 18, 2014Observed: 6.87 ft at 7:45AM Oct 18, 2014Observed: 6.86 ft at 8:00AM Oct 18, 2014Observed: 6.85 ft at 8:15AM Oct 18, 2014Observed: 6.84 ft at 8:30AM Oct 18, 2014Observed: 6.83 ft at 8:45AM Oct 18, 2014Observed: 6.82 ft at 9:00AM Oct 18, 2014Observed: 6.81 ft at 9:15AM Oct 18, 2014Observed: 6.79 ft at 9:30AM Oct 18, 2014Observed: 6.79 ft at 9:45AM Oct 18, 2014Observed: 6.77 ft at 10:00AM Oct 18, 2014Observed: 6.77 ft at 10:15AM Oct 18, 2014Observed: 6.76 ft at 10:30AM Oct 18, 2014Observed: 6.75 ft at 10:45AM Oct 18, 2014Observed: 6.73 ft at 11:00AM Oct 18, 2014Observed: 6.72 ft at 11:15AM Oct 18, 2014Observed: 6.71 ft at 11:30AM Oct 18, 2014Observed: 6.7 ft at 11:45AM Oct 18, 2014Observed: 6.7 ft at 12:00PM Oct 18, 2014Observed: 6.69 ft at 12:15PM Oct 18, 2014Observed: 6.68 ft at 12:30PM Oct 18, 2014Observed: 6.67 ft at 12:45PM Oct 18, 2014Observed: 6.66 ft at 1:00PM Oct 18, 2014Observed: 6.65 ft at 1:15PM Oct 18, 2014Observed: 6.64 ft at 1:30PM Oct 18, 2014Observed: 6.63 ft at 1:45PM Oct 18, 2014Observed: 6.62 ft at 2:00PM Oct 18, 2014Observed: 6.61 ft at 2:15PM Oct 18, 2014Observed: 6.6 ft at 2:30PM Oct 18, 2014Observed: 6.6 ft at 2:45PM Oct 18, 2014Observed: 6.59 ft at 3:00PM Oct 18, 2014Observed: 6.58 ft at 3:15PM Oct 18, 2014Observed: 6.57 ft at 3:30PM Oct 18, 2014Observed: 6.57 ft at 3:45PM Oct 18, 2014Observed: 6.56 ft at 4:00PM Oct 18, 2014Observed: 6.55 ft at 4:15PM Oct 18, 2014Observed: 6.54 ft at 4:30PM Oct 18, 2014Observed: 6.53 ft at 4:45PM Oct 18, 2014Observed: 6.52 ft at 5:00PM Oct 18, 2014Observed: 6.52 ft at 5:15PM Oct 18, 2014Observed: 6.51 ft at 5:30PM Oct 18, 2014Observed: 6.5 ft at 5:45PM Oct 18, 2014Observed: 6.5 ft at 6:00PM Oct 18, 2014Observed: 6.49 ft at 6:15PM Oct 18, 2014Observed: 6.48 ft at 6:30PM Oct 18, 2014Observed: 6.47 ft at 6:45PM Oct 18, 2014Observed: 6.47 ft at 7:00PM Oct 18, 2014Observed: 6.46 ft at 7:15PM Oct 18, 2014Observed: 6.46 ft at 7:30PM Oct 18, 2014Observed: 6.45 ft at 7:45PM Oct 18, 2014Observed: 6.45 ft at 8:00PM Oct 18, 2014Observed: 6.44 ft at 8:15PM Oct 18, 2014Observed: 6.43 ft at 8:30PM Oct 18, 2014Observed: 6.43 ft at 8:45PM Oct 18, 2014Observed: 6.42 ft at 9:00PM Oct 18, 2014Observed: 6.42 ft at 9:15PM Oct 18, 2014Observed: 6.42 ft at 9:30PM Oct 18, 2014Observed: 6.42 ft at 9:45PM Oct 18, 2014Observed: 6.41 ft at 10:00PM Oct 18, 2014Observed: 6.41 ft at 10:15PM Oct 18, 2014Observed: 6.41 ft at 10:30PM Oct 18, 2014Observed: 6.4 ft at 10:45PM Oct 18, 2014Observed: 6.4 ft at 11:00PM Oct 18, 2014Observed: 6.4 ft at 11:15PM Oct 18, 2014Observed: 6.4 ft at 11:30PM Oct 18, 2014Observed: 6.4 ft at 11:45PM Oct 18, 2014Observed: 6.4 ft at 12:00AM Oct 19, 2014Observed: 6.39 ft at 12:15AM Oct 19, 2014Observed: 6.39 ft at 12:30AM Oct 19, 2014Observed: 6.39 ft at 12:45AM Oct 19, 2014Observed: 6.39 ft at 1:00AM Oct 19, 2014Observed: 6.39 ft at 1:15AM Oct 19, 2014Observed: 6.39 ft at 1:30AM Oct 19, 2014Observed: 6.39 ft at 1:45AM Oct 19, 2014Observed: 6.39 ft at 2:00AM Oct 19, 2014Observed: 6.39 ft at 2:15AM Oct 19, 2014Observed: 6.38 ft at 2:30AM Oct 19, 2014Observed: 6.38 ft at 2:45AM Oct 19, 2014Observed: 6.38 ft at 3:00AM Oct 19, 2014Observed: 6.38 ft at 3:15AM Oct 19, 2014Observed: 6.38 ft at 3:30AM Oct 19, 2014Observed: 6.39 ft at 3:45AM Oct 19, 2014Observed: 6.39 ft at 4:00AM Oct 19, 2014Observed: 6.39 ft at 4:15AM Oct 19, 2014Observed: 6.39 ft at 4:30AM Oct 19, 2014Observed: 6.39 ft at 4:45AM Oct 19, 2014Observed: 6.39 ft at 5:00AM Oct 19, 2014Observed: 6.4 ft at 5:15AM Oct 19, 2014Observed: 6.4 ft at 5:30AM Oct 19, 2014Observed: 6.4 ft at 5:45AM Oct 19, 2014Observed: 6.41 ft at 6:00AM Oct 19, 2014Observed: 6.41 ft at 6:15AM Oct 19, 2014Observed: 6.41 ft at 6:30AM Oct 19, 2014Observed: 6.42 ft at 6:45AM Oct 19, 2014Observed: 6.42 ft at 7:00AM Oct 19, 2014Observed: 6.43 ft at 7:15AM Oct 19, 2014Observed: 6.43 ft at 7:30AM Oct 19, 2014Observed: 6.43 ft at 7:45AM Oct 19, 2014Observed: 6.44 ft at 8:00AM Oct 19, 2014Observed: 6.45 ft at 8:15AM Oct 19, 2014Observed: 6.45 ft at 8:30AM Oct 19, 2014Observed: 6.45 ft at 8:45AM Oct 19, 2014Observed: 6.46 ft at 9:00AM Oct 19, 2014Observed: 6.46 ft at 9:15AM Oct 19, 2014Observed: 6.47 ft at 9:30AM Oct 19, 2014Observed: 6.47 ft at 9:45AM Oct 19, 2014Observed: 6.47 ft at 10:00AM Oct 19, 2014Observed: 6.48 ft at 10:15AM Oct 19, 2014Observed: 6.48 ft at 10:30AM Oct 19, 2014Observed: 6.48 ft at 10:45AM Oct 19, 2014Observed: 6.49 ft at 11:00AM Oct 19, 2014Observed: 6.48 ft at 11:15AM Oct 19, 2014Observed: 6.49 ft at 11:30AM Oct 19, 2014Observed: 6.49 ft at 11:45AM Oct 19, 2014Observed: 6.49 ft at 12:00PM Oct 19, 2014Observed: 6.49 ft at 12:15PM Oct 19, 2014Observed: 6.49 ft at 12:30PM Oct 19, 2014Observed: 6.5 ft at 12:45PM Oct 19, 2014Observed: 6.5 ft at 1:00PM Oct 19, 2014Observed: 6.49 ft at 1:15PM Oct 19, 2014Observed: 6.49 ft at 1:30PM Oct 19, 2014Observed: 6.49 ft at 1:45PM Oct 19, 2014Observed: 6.49 ft at 2:00PM Oct 19, 2014Observed: 6.49 ft at 2:15PM Oct 19, 2014Observed: 6.49 ft at 2:30PM Oct 19, 2014Observed: 6.49 ft at 2:45PM Oct 19, 2014Observed: 6.49 ft at 3:00PM Oct 19, 2014Observed: 6.49 ft at 3:15PM Oct 19, 2014Observed: 6.49 ft at 3:30PM Oct 19, 2014Observed: 6.48 ft at 3:45PM Oct 19, 2014Observed: 6.48 ft at 4:00PM Oct 19, 2014Observed: 6.48 ft at 4:15PM Oct 19, 2014Observed: 6.47 ft at 4:30PM Oct 19, 2014Observed: 6.47 ft at 4:45PM Oct 19, 2014Observed: 6.47 ft at 5:00PM Oct 19, 2014Observed: 6.47 ft at 5:15PM Oct 19, 2014Observed: 6.47 ft at 5:30PM Oct 19, 2014Observed: 6.47 ft at 5:45PM Oct 19, 2014Observed: 6.46 ft at 6:00PM Oct 19, 2014Observed: 6.46 ft at 6:15PM Oct 19, 2014Observed: 6.46 ft at 6:30PM Oct 19, 2014Observed: 6.45 ft at 6:45PM Oct 19, 2014Observed: 6.45 ft at 7:00PM Oct 19, 2014Observed: 6.45 ft at 7:15PM Oct 19, 2014Observed: 6.44 ft at 7:30PM Oct 19, 2014Observed: 6.44 ft at 7:45PM Oct 19, 2014Observed: 6.44 ft at 8:00PM Oct 19, 2014Observed: 6.44 ft at 8:15PM Oct 19, 2014Observed: 6.43 ft at 8:30PM Oct 19, 2014Observed: 6.43 ft at 8:45PM Oct 19, 2014Observed: 6.42 ft at 9:00PM Oct 19, 2014Observed: 6.42 ft at 9:15PM Oct 19, 2014Observed: 6.42 ft at 9:30PM Oct 19, 2014Observed: 6.41 ft at 9:45PM Oct 19, 2014Observed: 6.41 ft at 10:00PM Oct 19, 2014Observed: 6.41 ft at 10:15PM Oct 19, 2014Observed: 6.4 ft at 10:30PM Oct 19, 2014Observed: 6.4 ft at 10:45PM Oct 19, 2014Observed: 6.4 ft at 11:00PM Oct 19, 2014Observed: 6.39 ft at 11:15PM Oct 19, 2014Observed: 6.39 ft at 11:30PM Oct 19, 2014Observed: 6.39 ft at 11:45PM Oct 19, 2014Observed: 6.38 ft at 12:00AM Oct 20, 2014Observed: 6.38 ft at 12:15AM Oct 20, 2014Observed: 6.38 ft at 12:30AM Oct 20, 2014Observed: 6.37 ft at 12:45AM Oct 20, 2014Observed: 6.37 ft at 1:00AM Oct 20, 2014Observed: 6.37 ft at 1:15AM Oct 20, 2014Observed: 6.36 ft at 1:30AM Oct 20, 2014Observed: 6.36 ft at 1:45AM Oct 20, 2014Observed: 6.36 ft at 2:00AM Oct 20, 2014Observed: 6.36 ft at 2:15AM Oct 20, 2014Observed: 6.35 ft at 2:30AM Oct 20, 2014Observed: 6.35 ft at 2:45AM Oct 20, 2014Observed: 6.34 ft at 3:00AM Oct 20, 2014Observed: 6.34 ft at 3:15AM Oct 20, 2014Observed: 6.34 ft at 3:30AM Oct 20, 2014Observed: 6.33 ft at 3:45AM Oct 20, 2014Observed: 6.33 ft at 4:00AM Oct 20, 2014Observed: 6.33 ft at 4:15AM Oct 20, 2014Observed: 6.33 ft at 4:30AM Oct 20, 2014Observed: 6.32 ft at 4:45AM Oct 20, 2014Observed: 6.32 ft at 5:00AM Oct 20, 2014Observed: 6.31 ft at 5:15AM Oct 20, 2014Observed: 6.31 ft at 5:30AM Oct 20, 2014Observed: 6.3 ft at 5:45AM Oct 20, 2014Observed: 6.3 ft at 6:00AM Oct 20, 2014Observed: 6.3 ft at 6:15AM Oct 20, 2014Observed: 6.3 ft at 6:30AM Oct 20, 2014Observed: 6.29 ft at 6:45AM Oct 20, 2014Observed: 6.29 ft at 7:00AM Oct 20, 2014Observed: 6.28 ft at 7:15AM Oct 20, 2014Observed: 6.28 ft at 7:30AM Oct 20, 2014Observed: 6.28 ft at 7:45AM Oct 20, 2014Observed: 6.28 ft at 8:00AM Oct 20, 2014Observed: 6.27 ft at 8:15AM Oct 20, 2014Observed: 6.26 ft at 8:30AM Oct 20, 2014Observed: 6.26 ft at 8:45AM Oct 20, 2014Observed: 6.27 ft at 9:00AM Oct 20, 2014Observed: 6.26 ft at 9:15AM Oct 20, 2014Observed: 6.25 ft at 9:30AM Oct 20, 2014Observed: 6.25 ft at 9:45AM Oct 20, 2014Observed: 6.24 ft at 10:00AM Oct 20, 2014Observed: 6.25 ft at 10:15AM Oct 20, 2014Observed: 6.23 ft at 10:30AM Oct 20, 2014Observed: 6.23 ft at 10:45AM Oct 20, 2014Observed: 6.23 ft at 11:00AM Oct 20, 2014Observed: 6.23 ft at 11:15AM Oct 20, 2014Observed: 6.23 ft at 11:30AM Oct 20, 2014Observed: 6.21 ft at 11:45AM Oct 20, 2014Observed: 6.21 ft at 12:00PM Oct 20, 2014Observed: 6.21 ft at 12:15PM Oct 20, 2014Observed: 6.21 ft at 12:30PM Oct 20, 2014Observed: 6.21 ft at 12:45PM Oct 20, 2014Observed: 6.2 ft at 1:00PM Oct 20, 2014Observed: 6.2 ft at 1:15PM Oct 20, 2014Observed: 6.19 ft at 1:30PM Oct 20, 2014Observed: 6.19 ft at 1:45PM Oct 20, 2014Observed: 6.19 ft at 2:00PM Oct 20, 2014Observed: 6.18 ft at 2:15PM Oct 20, 2014Observed: 6.18 ft at 2:30PM Oct 20, 2014Observed: 6.17 ft at 2:45PM Oct 20, 2014Observed: 6.17 ft at 3:00PM Oct 20, 2014Observed: 6.16 ft at 3:15PM Oct 20, 2014Observed: 6.17 ft at 3:30PM Oct 20, 2014Observed: 6.16 ft at 3:45PM Oct 20, 2014Observed: 6.15 ft at 4:00PM Oct 20, 2014Observed: 6.15 ft at 4:15PM Oct 20, 2014Observed: 6.15 ft at 4:30PM Oct 20, 2014Observed: 6.14 ft at 4:45PM Oct 20, 2014Observed: 6.14 ft at 5:00PM Oct 20, 2014Observed: 6.14 ft at 5:15PM Oct 20, 2014Observed: 6.13 ft at 5:30PM Oct 20, 2014Forecast: 6.2 ft 8:00PM Oct 20, 2014Forecast: 6.1 ft 2:00AM Oct 21, 2014Forecast: 6.1 ft 8:00AM Oct 21, 2014Forecast: 6.1 ft 2:00PM Oct 21, 2014Forecast: 6 ft 8:00PM Oct 21, 2014Forecast: 6 ft 2:00AM Oct 22, 2014Forecast: 6 ft 8:00AM Oct 22, 2014Forecast: 6.1 ft 2:00PM Oct 22, 2014Forecast: 6.3 ft 8:00PM Oct 22, 2014Forecast: 6.4 ft 2:00AM Oct 23, 2014Highest Forecast: 6.8 ft 8:00AM Oct 23, 2014USGS--Water Resources of the United StatesGRNM1(plotting HGIRG) Graph Created (6:46PM Oct 20, 2014)ObservedForecast (issued 11:14AM Oct 20)Latest observed value: 6.13 ft at 5:30 PM EDT 20-Oct-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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Hydrologic Resources Additional Resources
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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: 5-Aug-2014 6:39 PM
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