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

  
 

Visit https://www.weather.gov/owp/operations for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

View the Enhanced Operating Capability Products and Services StoryMap here



Hydrograph River at a Glance Download
Penobscot River above Grindstone Stage (ft)Flow (kcfs)Observed: 5.74 ft at 1:00PM Jan 25, 2023Observed: 5.72 ft at 1:15PM Jan 25, 2023Observed: 5.7 ft at 1:30PM Jan 25, 2023Observed: 5.68 ft at 1:45PM Jan 25, 2023Observed: 5.67 ft at 2:00PM Jan 25, 2023Observed: 5.65 ft at 2:15PM Jan 25, 2023Observed: 5.64 ft at 2:30PM Jan 25, 2023Observed: 5.63 ft at 2:45PM Jan 25, 2023Observed: 5.62 ft at 3:00PM Jan 25, 2023Observed: 5.61 ft at 3:15PM Jan 25, 2023Observed: 5.6 ft at 3:30PM Jan 25, 2023Observed: 5.59 ft at 3:45PM Jan 25, 2023Observed: 5.58 ft at 4:00PM Jan 25, 2023Observed: 5.57 ft at 4:15PM Jan 25, 2023Observed: 5.56 ft at 4:30PM Jan 25, 2023Observed: 5.56 ft at 4:45PM Jan 25, 2023Observed: 5.55 ft at 5:00PM Jan 25, 2023Observed: 5.55 ft at 5:15PM Jan 25, 2023Observed: 5.54 ft at 5:30PM Jan 25, 2023Observed: 5.54 ft at 5:45PM Jan 25, 2023Observed: 5.54 ft at 6:00PM Jan 25, 2023Observed: 5.54 ft at 6:15PM Jan 25, 2023Observed: 5.54 ft at 6:30PM Jan 25, 2023Observed: 5.54 ft at 6:45PM Jan 25, 2023Observed: 5.55 ft at 7:00PM Jan 25, 2023Observed: 5.55 ft at 7:15PM Jan 25, 2023Observed: 5.55 ft at 7:30PM Jan 25, 2023Observed: 5.56 ft at 7:45PM Jan 25, 2023Observed: 5.55 ft at 8:00PM Jan 25, 2023Observed: 5.55 ft at 8:15PM Jan 25, 2023Observed: 5.55 ft at 8:30PM Jan 25, 2023Observed: 5.54 ft at 8:45PM Jan 25, 2023Observed: 5.54 ft at 9:00PM Jan 25, 2023Observed: 5.54 ft at 9:15PM Jan 25, 2023Observed: 5.53 ft at 9:30PM Jan 25, 2023Observed: 5.53 ft at 9:45PM Jan 25, 2023Observed: 5.53 ft at 10:00PM Jan 25, 2023Observed: 5.52 ft at 10:15PM Jan 25, 2023Observed: 5.52 ft at 10:30PM Jan 25, 2023Observed: 5.51 ft at 10:45PM Jan 25, 2023Observed: 5.51 ft at 11:00PM Jan 25, 2023Observed: 5.51 ft at 11:15PM Jan 25, 2023Observed: 5.51 ft at 11:30PM Jan 25, 2023Observed: 5.5 ft at 11:45PM Jan 25, 2023Observed: 5.5 ft at 12:00AM Jan 26, 2023Observed: 5.5 ft at 12:15AM Jan 26, 2023Observed: 5.49 ft at 12:30AM Jan 26, 2023Observed: 5.49 ft at 12:45AM Jan 26, 2023Observed: 5.49 ft at 1:00AM Jan 26, 2023Observed: 5.49 ft at 1:15AM Jan 26, 2023Observed: 5.49 ft at 1:30AM Jan 26, 2023Observed: 5.49 ft at 1:45AM Jan 26, 2023Observed: 5.49 ft at 2:00AM Jan 26, 2023Observed: 5.49 ft at 2:15AM Jan 26, 2023Observed: 5.48 ft at 2:30AM Jan 26, 2023Observed: 5.48 ft at 2:45AM Jan 26, 2023Observed: 5.48 ft at 3:00AM Jan 26, 2023Observed: 5.48 ft at 3:15AM Jan 26, 2023Observed: 5.49 ft at 3:30AM Jan 26, 2023Observed: 5.49 ft at 3:45AM Jan 26, 2023Observed: 5.49 ft at 4:00AM Jan 26, 2023Observed: 5.5 ft at 4:15AM Jan 26, 2023Observed: 5.5 ft at 4:30AM Jan 26, 2023Observed: 5.51 ft at 4:45AM Jan 26, 2023Observed: 5.51 ft at 5:00AM Jan 26, 2023Observed: 5.51 ft at 5:15AM Jan 26, 2023Observed: 5.52 ft at 5:30AM Jan 26, 2023Observed: 5.52 ft at 5:45AM Jan 26, 2023Observed: 5.52 ft at 6:00AM Jan 26, 2023Observed: 5.53 ft at 6:15AM Jan 26, 2023Observed: 5.53 ft at 6:30AM Jan 26, 2023Observed: 5.53 ft at 6:45AM Jan 26, 2023Observed: 5.54 ft at 7:00AM Jan 26, 2023Observed: 5.54 ft at 7:15AM Jan 26, 2023Observed: 5.54 ft at 7:30AM Jan 26, 2023Observed: 5.55 ft at 7:45AM Jan 26, 2023Observed: 5.56 ft at 8:00AM Jan 26, 2023Observed: 5.56 ft at 8:15AM Jan 26, 2023Observed: 5.56 ft at 8:30AM Jan 26, 2023Observed: 5.56 ft at 8:45AM Jan 26, 2023Observed: 5.57 ft at 9:00AM Jan 26, 2023Observed: 5.57 ft at 9:15AM Jan 26, 2023Observed: 5.57 ft at 9:30AM Jan 26, 2023Observed: 5.57 ft at 9:45AM Jan 26, 2023Observed: 5.57 ft at 10:00AM Jan 26, 2023Observed: 5.56 ft at 10:15AM Jan 26, 2023Observed: 5.56 ft at 10:30AM Jan 26, 2023Observed: 5.55 ft at 10:45AM Jan 26, 2023Observed: 5.55 ft at 11:00AM Jan 26, 2023Observed: 5.53 ft at 11:15AM Jan 26, 2023Observed: 5.52 ft at 11:30AM Jan 26, 2023Observed: 5.51 ft at 11:45AM Jan 26, 2023Observed: 5.5 ft at 12:00PM Jan 26, 2023Observed: 5.49 ft at 12:15PM Jan 26, 2023Observed: 5.48 ft at 12:30PM Jan 26, 2023Observed: 5.47 ft at 12:45PM Jan 26, 2023Observed: 5.46 ft at 1:00PM Jan 26, 2023Observed: 5.46 ft at 1:15PM Jan 26, 2023Observed: 5.45 ft at 1:30PM Jan 26, 2023Observed: 5.44 ft at 1:45PM Jan 26, 2023Observed: 5.44 ft at 2:00PM Jan 26, 2023Observed: 5.43 ft at 2:15PM Jan 26, 2023Observed: 5.42 ft at 2:30PM Jan 26, 2023Observed: 5.41 ft at 2:45PM Jan 26, 2023Observed: 5.41 ft at 3:00PM Jan 26, 2023Observed: 5.4 ft at 3:15PM Jan 26, 2023Observed: 5.39 ft at 3:30PM Jan 26, 2023Observed: 5.38 ft at 3:45PM Jan 26, 2023Observed: 5.37 ft at 4:00PM Jan 26, 2023Observed: 5.36 ft at 4:15PM Jan 26, 2023Observed: 5.35 ft at 4:30PM Jan 26, 2023Observed: 5.34 ft at 4:45PM Jan 26, 2023Observed: 5.33 ft at 5:00PM Jan 26, 2023Observed: 5.32 ft at 5:15PM Jan 26, 2023Observed: 5.31 ft at 5:30PM Jan 26, 2023Observed: 5.3 ft at 5:45PM Jan 26, 2023Observed: 5.29 ft at 6:00PM Jan 26, 2023Observed: 5.28 ft at 6:15PM Jan 26, 2023Observed: 5.27 ft at 6:30PM Jan 26, 2023Observed: 5.26 ft at 6:45PM Jan 26, 2023Observed: 5.25 ft at 7:00PM Jan 26, 2023Observed: 5.25 ft at 7:15PM Jan 26, 2023Observed: 5.24 ft at 7:30PM Jan 26, 2023Observed: 5.23 ft at 7:45PM Jan 26, 2023Observed: 5.23 ft at 8:00PM Jan 26, 2023Observed: 5.22 ft at 8:15PM Jan 26, 2023Observed: 5.22 ft at 8:30PM Jan 26, 2023Observed: 5.22 ft at 8:45PM Jan 26, 2023Observed: 5.22 ft at 9:00PM Jan 26, 2023Observed: 5.22 ft at 9:15PM Jan 26, 2023Observed: 5.22 ft at 9:30PM Jan 26, 2023Observed: 5.22 ft at 9:45PM Jan 26, 2023Observed: 5.22 ft at 10:00PM Jan 26, 2023Observed: 5.22 ft at 10:15PM Jan 26, 2023Observed: 5.22 ft at 10:30PM Jan 26, 2023Observed: 5.22 ft at 10:45PM Jan 26, 2023Observed: 5.22 ft at 11:00PM Jan 26, 2023Observed: 5.22 ft at 11:15PM Jan 26, 2023Observed: 5.22 ft at 11:30PM Jan 26, 2023Observed: 5.23 ft at 11:45PM Jan 26, 2023Observed: 5.23 ft at 12:00AM Jan 27, 2023Observed: 5.24 ft at 12:15AM Jan 27, 2023Observed: 5.25 ft at 12:30AM Jan 27, 2023Observed: 5.26 ft at 12:45AM Jan 27, 2023Observed: 5.27 ft at 1:00AM Jan 27, 2023Observed: 5.28 ft at 1:15AM Jan 27, 2023Observed: 5.29 ft at 1:30AM Jan 27, 2023Observed: 5.29 ft at 1:45AM Jan 27, 2023Observed: 5.3 ft at 2:00AM Jan 27, 2023Observed: 5.31 ft at 2:15AM Jan 27, 2023Observed: 5.32 ft at 2:30AM Jan 27, 2023Observed: 5.32 ft at 2:45AM Jan 27, 2023Observed: 5.33 ft at 3:00AM Jan 27, 2023Observed: 5.34 ft at 3:15AM Jan 27, 2023Observed: 5.35 ft at 3:30AM Jan 27, 2023Observed: 5.35 ft at 3:45AM Jan 27, 2023Observed: 5.36 ft at 4:00AM Jan 27, 2023Observed: 5.37 ft at 4:15AM Jan 27, 2023Observed: 5.37 ft at 4:30AM Jan 27, 2023Observed: 5.38 ft at 4:45AM Jan 27, 2023Observed: 5.39 ft at 5:00AM Jan 27, 2023Observed: 5.4 ft at 5:15AM Jan 27, 2023Observed: 5.41 ft at 5:30AM Jan 27, 2023Observed: 5.42 ft at 5:45AM Jan 27, 2023Observed: 5.44 ft at 6:00AM Jan 27, 2023Observed: 5.45 ft at 6:15AM Jan 27, 2023Observed: 5.46 ft at 6:30AM Jan 27, 2023Observed: 5.48 ft at 6:45AM Jan 27, 2023Observed: 5.49 ft at 7:00AM Jan 27, 2023Observed: 5.51 ft at 7:15AM Jan 27, 2023Observed: 5.52 ft at 7:30AM Jan 27, 2023Observed: 5.54 ft at 7:45AM Jan 27, 2023Observed: 5.55 ft at 8:00AM Jan 27, 2023Observed: 5.57 ft at 8:15AM Jan 27, 2023Observed: 5.58 ft at 8:30AM Jan 27, 2023Observed: 5.6 ft at 8:45AM Jan 27, 2023Observed: 5.61 ft at 9:00AM Jan 27, 2023Observed: 5.62 ft at 9:15AM Jan 27, 2023Observed: 5.63 ft at 9:30AM Jan 27, 2023Observed: 5.64 ft at 9:45AM Jan 27, 2023Observed: 5.62 ft at 10:00AM Jan 27, 2023Observed: 5.6 ft at 10:15AM Jan 27, 2023Observed: 5.59 ft at 10:30AM Jan 27, 2023Observed: 5.57 ft at 10:45AM Jan 27, 2023Observed: 5.54 ft at 11:00AM Jan 27, 2023Observed: 5.51 ft at 11:15AM Jan 27, 2023Observed: 5.48 ft at 11:30AM Jan 27, 2023Observed: 5.45 ft at 11:45AM Jan 27, 2023Observed: 5.42 ft at 12:00PM Jan 27, 2023Observed: 5.4 ft at 12:15PM Jan 27, 2023Observed: 5.38 ft at 12:30PM Jan 27, 2023Observed: 5.38 ft at 12:45PM Jan 27, 2023Observed: 5.38 ft at 1:00PM Jan 27, 2023Observed: 5.38 ft at 1:15PM Jan 27, 2023Observed: 5.38 ft at 1:30PM Jan 27, 2023Observed: 5.38 ft at 1:45PM Jan 27, 2023Observed: 5.39 ft at 2:00PM Jan 27, 2023Observed: 5.39 ft at 2:15PM Jan 27, 2023Observed: 5.4 ft at 2:30PM Jan 27, 2023Observed: 5.41 ft at 2:45PM Jan 27, 2023Observed: 5.42 ft at 3:00PM Jan 27, 2023Observed: 5.42 ft at 3:15PM Jan 27, 2023Observed: 5.43 ft at 3:30PM Jan 27, 2023Observed: 5.44 ft at 3:45PM Jan 27, 2023Observed: 5.45 ft at 4:00PM Jan 27, 2023Observed: 5.45 ft at 4:15PM Jan 27, 2023Observed: 5.46 ft at 4:30PM Jan 27, 2023Observed: 5.47 ft at 4:45PM Jan 27, 2023Observed: 5.48 ft at 5:00PM Jan 27, 2023Observed: 5.49 ft at 5:15PM Jan 27, 2023Observed: 5.5 ft at 5:30PM Jan 27, 2023Observed: 5.52 ft at 5:45PM Jan 27, 2023Observed: 5.53 ft at 6:00PM Jan 27, 2023Observed: 5.54 ft at 6:15PM Jan 27, 2023Observed: 5.56 ft at 6:30PM Jan 27, 2023Observed: 5.57 ft at 6:45PM Jan 27, 2023Observed: 5.59 ft at 7:00PM Jan 27, 2023Observed: 5.6 ft at 7:15PM Jan 27, 2023Observed: 5.62 ft at 7:30PM Jan 27, 2023Observed: 5.64 ft at 7:45PM Jan 27, 2023Observed: 5.65 ft at 8:00PM Jan 27, 2023Observed: 5.67 ft at 8:15PM Jan 27, 2023Observed: 5.69 ft at 8:30PM Jan 27, 2023Observed: 5.7 ft at 8:45PM Jan 27, 2023Observed: 5.72 ft at 9:00PM Jan 27, 2023Observed: 5.73 ft at 9:15PM Jan 27, 2023Observed: 5.74 ft at 9:30PM Jan 27, 2023Observed: 5.76 ft at 9:45PM Jan 27, 2023Observed: 5.77 ft at 10:00PM Jan 27, 2023Observed: 5.78 ft at 10:15PM Jan 27, 2023Observed: 5.79 ft at 10:30PM Jan 27, 2023Observed: 5.8 ft at 10:45PM Jan 27, 2023Observed: 5.81 ft at 11:00PM Jan 27, 2023Observed: 5.82 ft at 11:15PM Jan 27, 2023Observed: 5.83 ft at 11:30PM Jan 27, 2023Observed: 5.84 ft at 11:45PM Jan 27, 2023Observed: 5.85 ft at 12:00AM Jan 28, 2023Observed: 5.85 ft at 12:15AM Jan 28, 2023Observed: 5.86 ft at 12:30AM Jan 28, 2023Observed: 5.87 ft at 12:45AM Jan 28, 2023Observed: 5.87 ft at 1:00AM Jan 28, 2023Observed: 5.88 ft at 1:15AM Jan 28, 2023Observed: 5.88 ft at 1:30AM Jan 28, 2023Observed: 5.89 ft at 1:45AM Jan 28, 2023Observed: 5.89 ft at 2:00AM Jan 28, 2023Observed: 5.9 ft at 2:15AM Jan 28, 2023Observed: 5.91 ft at 2:30AM Jan 28, 2023Observed: 5.91 ft at 2:45AM Jan 28, 2023Observed: 5.92 ft at 3:00AM Jan 28, 2023Observed: 5.92 ft at 3:15AM Jan 28, 2023Observed: 5.93 ft at 3:30AM Jan 28, 2023Observed: 5.93 ft at 3:45AM Jan 28, 2023Observed: 5.94 ft at 4:00AM Jan 28, 2023Observed: 5.95 ft at 4:15AM Jan 28, 2023Observed: 5.95 ft at 4:30AM Jan 28, 2023Observed: 5.96 ft at 4:45AM Jan 28, 2023Observed: 5.97 ft at 5:00AM Jan 28, 2023Observed: 5.97 ft at 5:15AM Jan 28, 2023Observed: 5.98 ft at 5:30AM Jan 28, 2023Observed: 5.98 ft at 5:45AM Jan 28, 2023Observed: 5.99 ft at 6:00AM Jan 28, 2023Observed: 6 ft at 6:15AM Jan 28, 2023Observed: 6 ft at 6:30AM Jan 28, 2023Observed: 6.01 ft at 6:45AM Jan 28, 2023Highest Observation: 6.02 ft at 7:00AM Jan 28, 2023Highest Observation: 6.02 ft at 7:15AM Jan 28, 2023Highest Observation: 6.02 ft at 7:30AM Jan 28, 2023Highest Observation: 6.02 ft at 7:45AM Jan 28, 2023Highest Observation: 6.02 ft at 8:00AM Jan 28, 2023Highest Observation: 6.02 ft at 8:15AM Jan 28, 2023Observed: 6.01 ft at 8:30AM Jan 28, 2023Observed: 6.01 ft at 8:45AM Jan 28, 2023Observed: 6.01 ft at 9:00AM Jan 28, 2023Observed: 6 ft at 9:15AM Jan 28, 2023Observed: 5.99 ft at 9:30AM Jan 28, 2023Observed: 5.99 ft at 9:45AM Jan 28, 2023Observed: 5.98 ft at 10:00AM Jan 28, 2023Observed: 5.97 ft at 10:15AM Jan 28, 2023Observed: 5.96 ft at 10:30AM Jan 28, 2023Observed: 5.96 ft at 10:45AM Jan 28, 2023Observed: 5.95 ft at 11:00AM Jan 28, 2023Observed: 5.93 ft at 11:15AM Jan 28, 2023Observed: 5.92 ft at 11:30AM Jan 28, 2023Observed: 5.9 ft at 11:45AM Jan 28, 2023Observed: 5.86 ft at 12:00PM Jan 28, 2023Highest Forecast: 5.6 ft 1:00PM Jan 28, 2023Highest Forecast: 5.6 ft 7:00PM Jan 28, 2023Highest Forecast: 5.6 ft 1:00AM Jan 29, 2023Highest Forecast: 5.6 ft 7:00AM Jan 29, 2023Highest Forecast: 5.6 ft 1:00PM Jan 29, 2023Highest Forecast: 5.6 ft 7:00PM Jan 29, 2023Highest Forecast: 5.6 ft 1:00AM Jan 30, 2023Highest Forecast: 5.6 ft 7:00AM Jan 30, 2023Highest Forecast: 5.6 ft 1:00PM Jan 30, 2023Highest Forecast: 5.6 ft 7:00PM Jan 30, 2023Highest Forecast: 5.6 ft 1:00AM Jan 31, 2023Highest Forecast: 5.6 ft 7:00AM Jan 31, 2023USGS--Water Resources of the United StatesGRNM1(plotting HGIRG) Graph Created (12:46PM Jan 28, 2023)ObservedForecast (issued 10:22AM Jan 28)Latest observed value: 5.86 ft at 12:00 PM EST 28-Jan-2023. Flood Stage is 13 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
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: 11
Low Stage (in feet): -9999

Historic 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
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.22 ft on 10/19/2022
(2) 10.70 ft on 04/14/2020
(3) 12.50 ft on 04/28/2019
(4) 12.22 ft on 04/27/2018
(5) 11.87 ft on 04/16/2014
Show More Recent Crests

(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 Hay Brook to Grindstone to Medway. Numerous homes, camps and campgrounds inundated. Flooding similar to April 1923. Penobscot River Trails inaccessible. Widespread flooding upstream to the Swift Brook Road in T3 R7 Wels.
15 State Route 11 flooded and impassable. Homes and camps inundated. Logging roads west and near the river will be flooded. Hathaway Road flooded near the river.
13 State Route 11 flooded in places. Homes and camps threatened. Significant flooding of Penobscot River Trails. Moderate backwater flooding of Mud & Hay Brooks.
12 State Route 11 gets water across the road, but passable. Minor flooding of Penobscot River Trails with some trails being cut off. Backwater flooding of Mud, Hay and Tots Brooks.
11 River rising with minor lowland flooding along the Penobscot River Trails.
Photos
(1) Gage House
About This Location Collapse

Latitude: 45.731300° N, Longitude: 68.589300° 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:

Additional Information Collapse
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 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.

Click individual graphics to enlarge.

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: 2-Nov-2020 7:30 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities