Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Penobscot River above Grindstone Stage (ft)Flow (kcfs)Observed: 9.01 ft at 10:30PM Apr 21, 2014Observed: 9.02 ft at 10:45PM Apr 21, 2014Observed: 9.01 ft at 11:00PM Apr 21, 2014Observed: 9 ft at 11:15PM Apr 21, 2014Observed: 9.01 ft at 11:30PM Apr 21, 2014Observed: 9.01 ft at 11:45PM Apr 21, 2014Observed: 9 ft at 12:00AM Apr 22, 2014Observed: 8.99 ft at 12:15AM Apr 22, 2014Observed: 9 ft at 12:30AM Apr 22, 2014Observed: 9 ft at 12:45AM Apr 22, 2014Observed: 8.99 ft at 1:00AM Apr 22, 2014Observed: 8.99 ft at 1:15AM Apr 22, 2014Observed: 8.99 ft at 1:30AM Apr 22, 2014Observed: 8.99 ft at 1:45AM Apr 22, 2014Observed: 8.98 ft at 2:00AM Apr 22, 2014Observed: 8.99 ft at 2:15AM Apr 22, 2014Observed: 8.99 ft at 2:30AM Apr 22, 2014Observed: 8.98 ft at 2:45AM Apr 22, 2014Observed: 8.98 ft at 3:00AM Apr 22, 2014Observed: 8.98 ft at 3:15AM Apr 22, 2014Observed: 8.98 ft at 3:30AM Apr 22, 2014Observed: 8.98 ft at 3:45AM Apr 22, 2014Observed: 8.98 ft at 4:00AM Apr 22, 2014Observed: 8.98 ft at 4:15AM Apr 22, 2014Observed: 8.98 ft at 4:30AM Apr 22, 2014Observed: 8.98 ft at 4:45AM Apr 22, 2014Observed: 8.97 ft at 5:00AM Apr 22, 2014Observed: 8.98 ft at 5:15AM Apr 22, 2014Observed: 8.97 ft at 5:30AM Apr 22, 2014Observed: 8.98 ft at 5:45AM Apr 22, 2014Observed: 8.98 ft at 6:00AM Apr 22, 2014Observed: 8.97 ft at 6:15AM Apr 22, 2014Observed: 8.97 ft at 6:30AM Apr 22, 2014Observed: 8.97 ft at 6:45AM Apr 22, 2014Observed: 8.97 ft at 7:00AM Apr 22, 2014Observed: 8.98 ft at 7:15AM Apr 22, 2014Observed: 8.97 ft at 7:30AM Apr 22, 2014Observed: 8.98 ft at 7:45AM Apr 22, 2014Observed: 8.97 ft at 8:00AM Apr 22, 2014Observed: 8.98 ft at 8:15AM Apr 22, 2014Observed: 8.98 ft at 8:30AM Apr 22, 2014Observed: 8.97 ft at 8:45AM Apr 22, 2014Observed: 8.97 ft at 9:00AM Apr 22, 2014Observed: 8.98 ft at 9:15AM Apr 22, 2014Observed: 8.98 ft at 9:30AM Apr 22, 2014Observed: 8.97 ft at 9:45AM Apr 22, 2014Observed: 8.98 ft at 10:00AM Apr 22, 2014Observed: 8.98 ft at 10:15AM Apr 22, 2014Observed: 8.98 ft at 10:30AM Apr 22, 2014Observed: 8.98 ft at 10:45AM Apr 22, 2014Observed: 8.98 ft at 11:00AM Apr 22, 2014Observed: 8.99 ft at 11:15AM Apr 22, 2014Observed: 8.98 ft at 11:30AM Apr 22, 2014Observed: 8.97 ft at 11:45AM Apr 22, 2014Observed: 8.98 ft at 12:00PM Apr 22, 2014Observed: 8.98 ft at 12:15PM Apr 22, 2014Observed: 8.98 ft at 12:30PM Apr 22, 2014Observed: 8.97 ft at 12:45PM Apr 22, 2014Observed: 8.97 ft at 1:00PM Apr 22, 2014Observed: 8.97 ft at 1:15PM Apr 22, 2014Observed: 8.97 ft at 1:30PM Apr 22, 2014Observed: 8.97 ft at 1:45PM Apr 22, 2014Observed: 8.97 ft at 2:00PM Apr 22, 2014Observed: 8.97 ft at 2:15PM Apr 22, 2014Observed: 8.97 ft at 2:30PM Apr 22, 2014Observed: 8.98 ft at 2:45PM Apr 22, 2014Observed: 8.97 ft at 3:00PM Apr 22, 2014Observed: 8.97 ft at 3:15PM Apr 22, 2014Observed: 8.97 ft at 3:30PM Apr 22, 2014Observed: 8.96 ft at 3:45PM Apr 22, 2014Observed: 8.97 ft at 4:00PM Apr 22, 2014Observed: 8.97 ft at 4:15PM Apr 22, 2014Observed: 8.97 ft at 4:30PM Apr 22, 2014Observed: 8.97 ft at 4:45PM Apr 22, 2014Observed: 8.97 ft at 5:00PM Apr 22, 2014Observed: 8.97 ft at 5:15PM Apr 22, 2014Observed: 8.97 ft at 5:30PM Apr 22, 2014Observed: 8.97 ft at 5:45PM Apr 22, 2014Observed: 8.98 ft at 6:00PM Apr 22, 2014Observed: 8.98 ft at 6:15PM Apr 22, 2014Observed: 8.98 ft at 6:30PM Apr 22, 2014Observed: 8.98 ft at 6:45PM Apr 22, 2014Observed: 8.97 ft at 7:00PM Apr 22, 2014Observed: 8.98 ft at 7:15PM Apr 22, 2014Observed: 8.98 ft at 7:30PM Apr 22, 2014Observed: 8.98 ft at 7:45PM Apr 22, 2014Observed: 8.98 ft at 8:00PM Apr 22, 2014Observed: 8.98 ft at 8:15PM Apr 22, 2014Observed: 8.99 ft at 8:30PM Apr 22, 2014Observed: 8.98 ft at 8:45PM Apr 22, 2014Observed: 9 ft at 9:00PM Apr 22, 2014Observed: 8.99 ft at 9:15PM Apr 22, 2014Observed: 8.99 ft at 9:30PM Apr 22, 2014Observed: 8.99 ft at 9:45PM Apr 22, 2014Observed: 8.99 ft at 10:00PM Apr 22, 2014Observed: 8.99 ft at 10:15PM Apr 22, 2014Observed: 8.99 ft at 10:30PM Apr 22, 2014Observed: 9 ft at 10:45PM Apr 22, 2014Observed: 9 ft at 11:00PM Apr 22, 2014Observed: 9 ft at 11:15PM Apr 22, 2014Observed: 9.01 ft at 11:30PM Apr 22, 2014Observed: 9.01 ft at 11:45PM Apr 22, 2014Observed: 9.01 ft at 12:00AM Apr 23, 2014Observed: 9.02 ft at 12:15AM Apr 23, 2014Observed: 9.01 ft at 12:30AM Apr 23, 2014Observed: 9.02 ft at 12:45AM Apr 23, 2014Observed: 9.02 ft at 1:00AM Apr 23, 2014Observed: 9.03 ft at 1:15AM Apr 23, 2014Observed: 9.02 ft at 1:30AM Apr 23, 2014Observed: 9.03 ft at 1:45AM Apr 23, 2014Observed: 9.03 ft at 2:00AM Apr 23, 2014Observed: 9.04 ft at 2:15AM Apr 23, 2014Observed: 9.04 ft at 2:30AM Apr 23, 2014Observed: 9.04 ft at 2:45AM Apr 23, 2014Observed: 9.05 ft at 3:00AM Apr 23, 2014Observed: 9.06 ft at 3:15AM Apr 23, 2014Observed: 9.06 ft at 3:30AM Apr 23, 2014Observed: 9.07 ft at 3:45AM Apr 23, 2014Observed: 9.08 ft at 4:00AM Apr 23, 2014Observed: 9.08 ft at 4:15AM Apr 23, 2014Observed: 9.09 ft at 4:30AM Apr 23, 2014Observed: 9.09 ft at 4:45AM Apr 23, 2014Observed: 9.1 ft at 5:00AM Apr 23, 2014Observed: 9.1 ft at 5:15AM Apr 23, 2014Observed: 9.11 ft at 5:30AM Apr 23, 2014Observed: 9.12 ft at 5:45AM Apr 23, 2014Observed: 9.12 ft at 6:00AM Apr 23, 2014Observed: 9.13 ft at 6:15AM Apr 23, 2014Observed: 9.13 ft at 6:30AM Apr 23, 2014Observed: 9.14 ft at 6:45AM Apr 23, 2014Observed: 9.15 ft at 7:00AM Apr 23, 2014Observed: 9.15 ft at 7:15AM Apr 23, 2014Observed: 9.16 ft at 7:30AM Apr 23, 2014Observed: 9.16 ft at 7:45AM Apr 23, 2014Observed: 9.17 ft at 8:00AM Apr 23, 2014Observed: 9.17 ft at 8:15AM Apr 23, 2014Observed: 9.18 ft at 8:30AM Apr 23, 2014Observed: 9.18 ft at 8:45AM Apr 23, 2014Observed: 9.19 ft at 9:00AM Apr 23, 2014Observed: 9.2 ft at 9:15AM Apr 23, 2014Observed: 9.2 ft at 9:30AM Apr 23, 2014Observed: 9.21 ft at 9:45AM Apr 23, 2014Observed: 9.21 ft at 10:00AM Apr 23, 2014Observed: 9.22 ft at 10:15AM Apr 23, 2014Observed: 9.22 ft at 10:30AM Apr 23, 2014Observed: 9.23 ft at 10:45AM Apr 23, 2014Observed: 9.25 ft at 11:00AM Apr 23, 2014Observed: 9.24 ft at 11:15AM Apr 23, 2014Observed: 9.25 ft at 11:30AM Apr 23, 2014Observed: 9.26 ft at 11:45AM Apr 23, 2014Observed: 9.26 ft at 12:00PM Apr 23, 2014Observed: 9.27 ft at 12:15PM Apr 23, 2014Observed: 9.28 ft at 12:30PM Apr 23, 2014Observed: 9.28 ft at 12:45PM Apr 23, 2014Observed: 9.3 ft at 1:00PM Apr 23, 2014Observed: 9.3 ft at 1:15PM Apr 23, 2014Observed: 9.3 ft at 1:30PM Apr 23, 2014Observed: 9.32 ft at 1:45PM Apr 23, 2014Observed: 9.32 ft at 2:00PM Apr 23, 2014Observed: 9.32 ft at 2:15PM Apr 23, 2014Observed: 9.34 ft at 2:30PM Apr 23, 2014Observed: 9.34 ft at 2:45PM Apr 23, 2014Observed: 9.34 ft at 3:00PM Apr 23, 2014Observed: 9.36 ft at 3:15PM Apr 23, 2014Observed: 9.36 ft at 3:30PM Apr 23, 2014Observed: 9.37 ft at 3:45PM Apr 23, 2014Observed: 9.38 ft at 4:00PM Apr 23, 2014Observed: 9.38 ft at 4:15PM Apr 23, 2014Observed: 9.39 ft at 4:30PM Apr 23, 2014Observed: 9.4 ft at 4:45PM Apr 23, 2014Observed: 9.41 ft at 5:00PM Apr 23, 2014Observed: 9.42 ft at 5:15PM Apr 23, 2014Observed: 9.43 ft at 5:30PM Apr 23, 2014Observed: 9.43 ft at 5:45PM Apr 23, 2014Observed: 9.44 ft at 6:00PM Apr 23, 2014Observed: 9.44 ft at 6:15PM Apr 23, 2014Observed: 9.45 ft at 6:30PM Apr 23, 2014Observed: 9.46 ft at 6:45PM Apr 23, 2014Observed: 9.47 ft at 7:00PM Apr 23, 2014Observed: 9.48 ft at 7:15PM Apr 23, 2014Observed: 9.47 ft at 7:30PM Apr 23, 2014Observed: 9.48 ft at 7:45PM Apr 23, 2014Observed: 9.48 ft at 8:00PM Apr 23, 2014Observed: 9.49 ft at 8:15PM Apr 23, 2014Observed: 9.49 ft at 8:30PM Apr 23, 2014Observed: 9.5 ft at 8:45PM Apr 23, 2014Observed: 9.5 ft at 9:00PM Apr 23, 2014Observed: 9.51 ft at 9:15PM Apr 23, 2014Observed: 9.51 ft at 9:30PM Apr 23, 2014Observed: 9.52 ft at 9:45PM Apr 23, 2014Observed: 9.53 ft at 10:00PM Apr 23, 2014Observed: 9.53 ft at 10:15PM Apr 23, 2014Observed: 9.53 ft at 10:30PM Apr 23, 2014Observed: 9.53 ft at 10:45PM Apr 23, 2014Observed: 9.55 ft at 11:00PM Apr 23, 2014Observed: 9.55 ft at 11:15PM Apr 23, 2014Observed: 9.55 ft at 11:30PM Apr 23, 2014Observed: 9.55 ft at 11:45PM Apr 23, 2014Observed: 9.55 ft at 12:00AM Apr 24, 2014Observed: 9.55 ft at 12:15AM Apr 24, 2014Observed: 9.55 ft at 12:30AM Apr 24, 2014Observed: 9.55 ft at 12:45AM Apr 24, 2014Observed: 9.56 ft at 1:00AM Apr 24, 2014Observed: 9.56 ft at 1:15AM Apr 24, 2014Observed: 9.57 ft at 1:30AM Apr 24, 2014Observed: 9.56 ft at 1:45AM Apr 24, 2014Observed: 9.57 ft at 2:00AM Apr 24, 2014Observed: 9.57 ft at 2:15AM Apr 24, 2014Observed: 9.57 ft at 2:30AM Apr 24, 2014Observed: 9.57 ft at 2:45AM Apr 24, 2014Observed: 9.57 ft at 3:00AM Apr 24, 2014Observed: 9.58 ft at 3:15AM Apr 24, 2014Observed: 9.58 ft at 3:30AM Apr 24, 2014Observed: 9.58 ft at 3:45AM Apr 24, 2014Observed: 9.57 ft at 4:00AM Apr 24, 2014Observed: 9.57 ft at 4:15AM Apr 24, 2014Observed: 9.58 ft at 4:30AM Apr 24, 2014Observed: 9.58 ft at 4:45AM Apr 24, 2014Observed: 9.58 ft at 5:00AM Apr 24, 2014Observed: 9.58 ft at 5:15AM Apr 24, 2014Observed: 9.58 ft at 5:30AM Apr 24, 2014Observed: 9.58 ft at 5:45AM Apr 24, 2014Observed: 9.58 ft at 6:00AM Apr 24, 2014Observed: 9.59 ft at 6:15AM Apr 24, 2014Observed: 9.59 ft at 6:30AM Apr 24, 2014Observed: 9.58 ft at 6:45AM Apr 24, 2014Observed: 9.58 ft at 7:00AM Apr 24, 2014Observed: 9.58 ft at 7:15AM Apr 24, 2014Observed: 9.58 ft at 7:30AM Apr 24, 2014Observed: 9.59 ft at 7:45AM Apr 24, 2014Observed: 9.59 ft at 8:00AM Apr 24, 2014Observed: 9.6 ft at 8:15AM Apr 24, 2014Observed: 9.59 ft at 8:30AM Apr 24, 2014Observed: 9.6 ft at 8:45AM Apr 24, 2014Observed: 9.6 ft at 9:00AM Apr 24, 2014Observed: 9.59 ft at 9:15AM Apr 24, 2014Observed: 9.59 ft at 9:30AM Apr 24, 2014Observed: 9.59 ft at 9:45AM Apr 24, 2014Observed: 9.59 ft at 10:00AM Apr 24, 2014Observed: 9.6 ft at 10:15AM Apr 24, 2014Observed: 9.61 ft at 10:30AM Apr 24, 2014Observed: 9.6 ft at 10:45AM Apr 24, 2014Observed: 9.6 ft at 11:00AM Apr 24, 2014Observed: 9.6 ft at 11:15AM Apr 24, 2014Observed: 9.6 ft at 11:30AM Apr 24, 2014Observed: 9.6 ft at 11:45AM Apr 24, 2014Observed: 9.61 ft at 12:00PM Apr 24, 2014Observed: 9.6 ft at 12:15PM Apr 24, 2014Observed: 9.6 ft at 12:30PM Apr 24, 2014Observed: 9.6 ft at 12:45PM Apr 24, 2014Observed: 9.6 ft at 1:00PM Apr 24, 2014Observed: 9.6 ft at 1:15PM Apr 24, 2014Observed: 9.6 ft at 1:30PM Apr 24, 2014Observed: 9.6 ft at 1:45PM Apr 24, 2014Observed: 9.61 ft at 2:00PM Apr 24, 2014Observed: 9.6 ft at 2:15PM Apr 24, 2014Observed: 9.6 ft at 2:30PM Apr 24, 2014Observed: 9.6 ft at 2:45PM Apr 24, 2014Observed: 9.6 ft at 3:00PM Apr 24, 2014Observed: 9.61 ft at 3:15PM Apr 24, 2014Observed: 9.6 ft at 3:30PM Apr 24, 2014Highest Observation: 9.62 ft at 3:45PM Apr 24, 2014Observed: 9.61 ft at 4:00PM Apr 24, 2014Observed: 9.6 ft at 4:15PM Apr 24, 2014Observed: 9.6 ft at 4:30PM Apr 24, 2014Observed: 9.6 ft at 4:45PM Apr 24, 2014Observed: 9.6 ft at 5:00PM Apr 24, 2014Observed: 9.6 ft at 5:15PM Apr 24, 2014Observed: 9.6 ft at 5:30PM Apr 24, 2014Observed: 9.59 ft at 5:45PM Apr 24, 2014Observed: 9.6 ft at 6:00PM Apr 24, 2014Observed: 9.6 ft at 6:15PM Apr 24, 2014Observed: 9.6 ft at 6:30PM Apr 24, 2014Observed: 9.6 ft at 6:45PM Apr 24, 2014Observed: 9.6 ft at 7:00PM Apr 24, 2014Observed: 9.59 ft at 7:15PM Apr 24, 2014Observed: 9.6 ft at 7:30PM Apr 24, 2014Observed: 9.6 ft at 7:45PM Apr 24, 2014Observed: 9.6 ft at 8:00PM Apr 24, 2014Observed: 9.6 ft at 8:15PM Apr 24, 2014Observed: 9.6 ft at 8:30PM Apr 24, 2014Observed: 9.61 ft at 8:45PM Apr 24, 2014Observed: 9.6 ft at 9:00PM Apr 24, 2014Observed: 9.61 ft at 9:15PM Apr 24, 2014Observed: 9.61 ft at 9:30PM Apr 24, 2014Observed: 9.6 ft at 9:45PM Apr 24, 2014Highest Forecast: 9.6 ft 2:00AM Apr 25, 2014Highest Forecast: 9.6 ft 8:00AM Apr 25, 2014Highest Forecast: 9.6 ft 2:00PM Apr 25, 2014Forecast: 9.5 ft 8:00PM Apr 25, 2014Forecast: 9.4 ft 2:00AM Apr 26, 2014Forecast: 9.4 ft 8:00AM Apr 26, 2014Forecast: 9.3 ft 2:00PM Apr 26, 2014Forecast: 9.2 ft 8:00PM Apr 26, 2014Forecast: 9.1 ft 2:00AM Apr 27, 2014Forecast: 9 ft 8:00AM Apr 27, 2014USGS--Water Resources of the United StatesGRNM1(plotting HGIRG) Graph Created (10:16PM Apr 24, 2014)ObservedForecast (issued 11:09AM Apr 24)Latest observed value: 9.6 ft at 9:45 PM EDT 24-Apr-2014. Flood Stage is 13 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Penobscot River above Grindstone are issued routinely year-round.

Return to Area Map
 
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


Low Water Records
Currently none available.
Zoom Level: 16
Gauge Location
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:

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
Caribou Weather Forecast Office
810 Main St.
Caribou, ME 04736
(207) 492-0170
Ask Questions/Webmaster
Page last modified: 8-Apr-2014 8:36 AM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities