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 Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Web Portal Changes:

  • Attention: Technicians are currently working to bring Precipitation datasets back to full capability after the April 16 outage.
  • NWPS - water.noaa.gov - Officially operational on Wednesday, March 27th, 8-9am EDT
  • AHPS - water.weather.gov- Scheduled operations ends on Tuesday, May 28th, 2024 - the pages will automatically redirect to water.noaa.gov until May 28, 2025.
  • Other Important URL changes - Service Change Notice 24-29 

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
Tioga River at Mansfield Stage (ft)Flow (kcfs)Highest Observation: 1.19 ft at 3:45AM Apr 20, 2024Highest Observation: 1.19 ft at 4:00AM Apr 20, 2024Observed: 1.18 ft at 4:15AM Apr 20, 2024Observed: 1.18 ft at 4:30AM Apr 20, 2024Observed: 1.18 ft at 4:45AM Apr 20, 2024Observed: 1.18 ft at 5:00AM Apr 20, 2024Observed: 1.18 ft at 5:15AM Apr 20, 2024Observed: 1.18 ft at 5:30AM Apr 20, 2024Highest Observation: 1.19 ft at 5:45AM Apr 20, 2024Observed: 1.18 ft at 6:00AM Apr 20, 2024Observed: 1.18 ft at 6:15AM Apr 20, 2024Observed: 1.18 ft at 6:30AM Apr 20, 2024Observed: 1.17 ft at 6:45AM Apr 20, 2024Observed: 1.17 ft at 7:00AM Apr 20, 2024Observed: 1.17 ft at 7:15AM Apr 20, 2024Observed: 1.17 ft at 7:30AM Apr 20, 2024Observed: 1.17 ft at 7:45AM Apr 20, 2024Observed: 1.17 ft at 8:00AM Apr 20, 2024Observed: 1.17 ft at 8:15AM Apr 20, 2024Observed: 1.17 ft at 8:30AM Apr 20, 2024Observed: 1.16 ft at 8:45AM Apr 20, 2024Observed: 1.16 ft at 9:00AM Apr 20, 2024Observed: 1.16 ft at 9:15AM Apr 20, 2024Observed: 1.16 ft at 9:30AM Apr 20, 2024Observed: 1.16 ft at 9:45AM Apr 20, 2024Observed: 1.16 ft at 10:00AM Apr 20, 2024Observed: 1.15 ft at 11:15AM Apr 20, 2024Observed: 1.15 ft at 11:30AM Apr 20, 2024Observed: 1.14 ft at 11:45AM Apr 20, 2024Observed: 1.13 ft at 12:00PM Apr 20, 2024Observed: 1.14 ft at 2:15PM Apr 20, 2024Observed: 1.13 ft at 2:30PM Apr 20, 2024Observed: 1.11 ft at 2:45PM Apr 20, 2024Observed: 1.12 ft at 3:00PM Apr 20, 2024Observed: 1.12 ft at 3:15PM Apr 20, 2024Observed: 1.12 ft at 3:30PM Apr 20, 2024Observed: 1.12 ft at 3:45PM Apr 20, 2024Observed: 1.12 ft at 4:00PM Apr 20, 2024Observed: 1.12 ft at 4:15PM Apr 20, 2024Observed: 1.1 ft at 4:30PM Apr 20, 2024Observed: 1.11 ft at 4:45PM Apr 20, 2024Observed: 1.11 ft at 5:00PM Apr 20, 2024Observed: 1.1 ft at 5:15PM Apr 20, 2024Observed: 1.1 ft at 5:30PM Apr 20, 2024Observed: 1.1 ft at 5:45PM Apr 20, 2024Observed: 1.09 ft at 6:00PM Apr 20, 2024Observed: 1.1 ft at 6:15PM Apr 20, 2024Observed: 1.09 ft at 6:30PM Apr 20, 2024Observed: 1.09 ft at 6:45PM Apr 20, 2024Observed: 1.09 ft at 7:00PM Apr 20, 2024Observed: 1.08 ft at 7:15PM Apr 20, 2024Observed: 1.08 ft at 7:30PM Apr 20, 2024Observed: 1.07 ft at 7:45PM Apr 20, 2024Observed: 1.08 ft at 8:00PM Apr 20, 2024Observed: 1.08 ft at 8:15PM Apr 20, 2024Observed: 1.07 ft at 8:30PM Apr 20, 2024Observed: 1.07 ft at 8:45PM Apr 20, 2024Observed: 1.07 ft at 9:00PM Apr 20, 2024Observed: 1.06 ft at 9:15PM Apr 20, 2024Observed: 1.06 ft at 9:30PM Apr 20, 2024Observed: 1.06 ft at 9:45PM Apr 20, 2024Observed: 1.06 ft at 10:00PM Apr 20, 2024Observed: 1.06 ft at 10:01PM Apr 20, 2024Observed: 1.06 ft at 10:15PM Apr 20, 2024Observed: 1.05 ft at 10:30PM Apr 20, 2024Observed: 1.05 ft at 10:45PM Apr 20, 2024Observed: 1.05 ft at 11:00PM Apr 20, 2024Observed: 1.05 ft at 11:15PM Apr 20, 2024Observed: 1.05 ft at 11:30PM Apr 20, 2024Observed: 1.05 ft at 11:45PM Apr 20, 2024Observed: 1.05 ft at 12:00AM Apr 21, 2024Observed: 1.05 ft at 12:15AM Apr 21, 2024Observed: 1.05 ft at 12:30AM Apr 21, 2024Observed: 1.04 ft at 12:45AM Apr 21, 2024Observed: 1.04 ft at 1:00AM Apr 21, 2024Observed: 1.04 ft at 1:15AM Apr 21, 2024Observed: 1.03 ft at 1:30AM Apr 21, 2024Observed: 1.04 ft at 1:45AM Apr 21, 2024Observed: 1.04 ft at 2:00AM Apr 21, 2024Observed: 1.03 ft at 2:15AM Apr 21, 2024Observed: 1.03 ft at 2:30AM Apr 21, 2024Observed: 1.03 ft at 2:45AM Apr 21, 2024Observed: 1.03 ft at 3:00AM Apr 21, 2024Observed: 1.03 ft at 3:15AM Apr 21, 2024Observed: 1.02 ft at 3:30AM Apr 21, 2024Observed: 1.02 ft at 3:45AM Apr 21, 2024Observed: 1.02 ft at 4:00AM Apr 21, 2024Observed: 1.02 ft at 4:15AM Apr 21, 2024Observed: 1.02 ft at 4:30AM Apr 21, 2024Observed: 1.02 ft at 4:45AM Apr 21, 2024Observed: 1.02 ft at 5:00AM Apr 21, 2024Observed: 1.02 ft at 5:15AM Apr 21, 2024Observed: 1.02 ft at 5:30AM Apr 21, 2024Observed: 1.01 ft at 5:45AM Apr 21, 2024Observed: 1.01 ft at 6:00AM Apr 21, 2024Observed: 1.01 ft at 6:15AM Apr 21, 2024Observed: 1.01 ft at 6:30AM Apr 21, 2024Observed: 1.01 ft at 6:45AM Apr 21, 2024Observed: 1.01 ft at 7:00AM Apr 21, 2024Observed: 1.01 ft at 7:15AM Apr 21, 2024Observed: 1.01 ft at 7:30AM Apr 21, 2024Observed: 1.01 ft at 7:45AM Apr 21, 2024Observed: 1 ft at 8:00AM Apr 21, 2024Observed: 1 ft at 8:15AM Apr 21, 2024Observed: 1 ft at 8:30AM Apr 21, 2024Observed: 1 ft at 8:45AM Apr 21, 2024Observed: 1 ft at 9:00AM Apr 21, 2024Observed: 1 ft at 9:15AM Apr 21, 2024Observed: 0.99 ft at 9:30AM Apr 21, 2024Observed: 1 ft at 9:45AM Apr 21, 2024Observed: 1 ft at 10:00AM Apr 21, 2024Observed: 0.99 ft at 10:15AM Apr 21, 2024Observed: 0.99 ft at 10:30AM Apr 21, 2024Observed: 0.99 ft at 10:45AM Apr 21, 2024Observed: 0.99 ft at 11:00AM Apr 21, 2024Observed: 1 ft at 11:15AM Apr 21, 2024Observed: 0.99 ft at 11:30AM Apr 21, 2024Observed: 0.99 ft at 11:45AM Apr 21, 2024Observed: 0.99 ft at 12:00PM Apr 21, 2024Observed: 0.98 ft at 12:15PM Apr 21, 2024Observed: 0.99 ft at 12:30PM Apr 21, 2024Observed: 0.98 ft at 12:45PM Apr 21, 2024Observed: 0.98 ft at 1:00PM Apr 21, 2024Observed: 0.98 ft at 1:15PM Apr 21, 2024Observed: 0.97 ft at 1:30PM Apr 21, 2024Observed: 0.98 ft at 1:45PM Apr 21, 2024Observed: 0.98 ft at 2:00PM Apr 21, 2024Observed: 0.98 ft at 2:15PM Apr 21, 2024Observed: 0.98 ft at 2:30PM Apr 21, 2024Observed: 0.98 ft at 2:45PM Apr 21, 2024Observed: 0.98 ft at 3:00PM Apr 21, 2024Observed: 0.98 ft at 3:15PM Apr 21, 2024Observed: 0.98 ft at 3:30PM Apr 21, 2024Observed: 0.98 ft at 3:45PM Apr 21, 2024Observed: 0.97 ft at 4:00PM Apr 21, 2024Observed: 0.97 ft at 4:15PM Apr 21, 2024Observed: 0.97 ft at 4:30PM Apr 21, 2024Observed: 0.97 ft at 4:45PM Apr 21, 2024Observed: 0.97 ft at 5:00PM Apr 21, 2024Observed: 0.97 ft at 5:15PM Apr 21, 2024Observed: 0.97 ft at 5:30PM Apr 21, 2024Observed: 0.97 ft at 5:45PM Apr 21, 2024Observed: 0.97 ft at 6:00PM Apr 21, 2024Observed: 0.96 ft at 6:15PM Apr 21, 2024Observed: 0.97 ft at 6:30PM Apr 21, 2024Observed: 0.96 ft at 6:45PM Apr 21, 2024Observed: 0.96 ft at 7:00PM Apr 21, 2024Observed: 0.96 ft at 7:15PM Apr 21, 2024Observed: 0.97 ft at 7:30PM Apr 21, 2024Observed: 0.96 ft at 7:45PM Apr 21, 2024Observed: 0.96 ft at 8:00PM Apr 21, 2024Observed: 0.95 ft at 8:15PM Apr 21, 2024Observed: 0.95 ft at 8:30PM Apr 21, 2024Observed: 0.95 ft at 8:45PM Apr 21, 2024Observed: 0.96 ft at 9:00PM Apr 21, 2024Observed: 0.96 ft at 9:01PM Apr 21, 2024Observed: 0.95 ft at 9:15PM Apr 21, 2024Observed: 0.95 ft at 9:30PM Apr 21, 2024Observed: 0.95 ft at 9:45PM Apr 21, 2024Observed: 0.96 ft at 10:00PM Apr 21, 2024Observed: 0.95 ft at 10:15PM Apr 21, 2024Observed: 0.94 ft at 10:30PM Apr 21, 2024Observed: 0.94 ft at 10:45PM Apr 21, 2024Observed: 0.95 ft at 11:00PM Apr 21, 2024Observed: 0.94 ft at 11:15PM Apr 21, 2024Observed: 0.94 ft at 11:30PM Apr 21, 2024Observed: 0.94 ft at 11:45PM Apr 21, 2024Observed: 0.94 ft at 12:00AM Apr 22, 2024Observed: 0.94 ft at 12:15AM Apr 22, 2024Observed: 0.94 ft at 12:30AM Apr 22, 2024Observed: 0.94 ft at 12:45AM Apr 22, 2024Observed: 0.93 ft at 1:00AM Apr 22, 2024Observed: 0.94 ft at 1:15AM Apr 22, 2024Observed: 0.94 ft at 1:30AM Apr 22, 2024Observed: 0.93 ft at 1:45AM Apr 22, 2024Observed: 0.94 ft at 2:00AM Apr 22, 2024Observed: 0.93 ft at 2:15AM Apr 22, 2024Observed: 0.93 ft at 2:30AM Apr 22, 2024Observed: 0.93 ft at 2:45AM Apr 22, 2024Observed: 0.92 ft at 3:00AM Apr 22, 2024Observed: 0.92 ft at 3:15AM Apr 22, 2024Observed: 0.93 ft at 3:30AM Apr 22, 2024Observed: 0.92 ft at 3:45AM Apr 22, 2024Observed: 0.92 ft at 4:00AM Apr 22, 2024Observed: 0.92 ft at 4:15AM Apr 22, 2024Observed: 0.92 ft at 4:30AM Apr 22, 2024Observed: 0.91 ft at 4:45AM Apr 22, 2024Observed: 0.92 ft at 5:00AM Apr 22, 2024Observed: 0.92 ft at 5:15AM Apr 22, 2024Observed: 0.91 ft at 5:30AM Apr 22, 2024Observed: 0.91 ft at 5:45AM Apr 22, 2024Observed: 0.91 ft at 6:00AM Apr 22, 2024Observed: 0.91 ft at 6:15AM Apr 22, 2024Observed: 0.91 ft at 6:30AM Apr 22, 2024Observed: 0.91 ft at 6:45AM Apr 22, 2024Observed: 0.91 ft at 7:00AM Apr 22, 2024Observed: 0.91 ft at 7:15AM Apr 22, 2024Observed: 0.91 ft at 7:30AM Apr 22, 2024Observed: 0.9 ft at 7:45AM Apr 22, 2024Observed: 0.9 ft at 8:00AM Apr 22, 2024Observed: 0.9 ft at 8:15AM Apr 22, 2024Observed: 0.9 ft at 8:30AM Apr 22, 2024Observed: 0.9 ft at 8:45AM Apr 22, 2024Observed: 0.9 ft at 9:00AM Apr 22, 2024Observed: 0.89 ft at 9:15AM Apr 22, 2024Observed: 0.9 ft at 9:30AM Apr 22, 2024Observed: 0.9 ft at 9:45AM Apr 22, 2024Observed: 0.9 ft at 10:00AM Apr 22, 2024Observed: 0.9 ft at 10:15AM Apr 22, 2024Observed: 0.9 ft at 10:30AM Apr 22, 2024Observed: 0.9 ft at 10:45AM Apr 22, 2024Observed: 0.9 ft at 11:00AM Apr 22, 2024Observed: 0.9 ft at 11:15AM Apr 22, 2024Observed: 0.89 ft at 11:30AM Apr 22, 2024Observed: 0.9 ft at 11:45AM Apr 22, 2024Observed: 0.89 ft at 12:00PM Apr 22, 2024Observed: 0.9 ft at 12:15PM Apr 22, 2024Observed: 0.9 ft at 12:30PM Apr 22, 2024Observed: 0.89 ft at 12:45PM Apr 22, 2024Observed: 0.89 ft at 1:00PM Apr 22, 2024Observed: 0.9 ft at 1:15PM Apr 22, 2024Observed: 0.89 ft at 1:30PM Apr 22, 2024Observed: 0.9 ft at 1:45PM Apr 22, 2024Observed: 0.9 ft at 2:00PM Apr 22, 2024Observed: 0.89 ft at 2:15PM Apr 22, 2024Observed: 0.89 ft at 2:30PM Apr 22, 2024Observed: 0.89 ft at 2:45PM Apr 22, 2024Observed: 0.89 ft at 3:00PM Apr 22, 2024Observed: 0.89 ft at 3:15PM Apr 22, 2024Observed: 0.89 ft at 3:30PM Apr 22, 2024Observed: 0.89 ft at 3:45PM Apr 22, 2024Observed: 0.88 ft at 4:00PM Apr 22, 2024Observed: 0.88 ft at 4:15PM Apr 22, 2024Observed: 0.88 ft at 4:30PM Apr 22, 2024Observed: 0.87 ft at 4:45PM Apr 22, 2024Observed: 0.88 ft at 5:00PM Apr 22, 2024Observed: 0.88 ft at 5:15PM Apr 22, 2024Observed: 0.88 ft at 5:30PM Apr 22, 2024Observed: 0.87 ft at 5:45PM Apr 22, 2024Observed: 0.88 ft at 6:00PM Apr 22, 2024Observed: 0.87 ft at 6:15PM Apr 22, 2024Observed: 0.87 ft at 6:30PM Apr 22, 2024Observed: 0.87 ft at 6:45PM Apr 22, 2024Observed: 0.87 ft at 7:00PM Apr 22, 2024Observed: 0.87 ft at 7:15PM Apr 22, 2024Observed: 0.87 ft at 7:30PM Apr 22, 2024Observed: 0.86 ft at 7:45PM Apr 22, 2024Observed: 0.86 ft at 8:00PM Apr 22, 2024Observed: 0.86 ft at 8:01PM Apr 22, 2024Observed: 0.86 ft at 8:15PM Apr 22, 2024Observed: 0.86 ft at 8:30PM Apr 22, 2024Observed: 0.85 ft at 8:45PM Apr 22, 2024Observed: 0.85 ft at 9:00PM Apr 22, 2024Observed: 0.85 ft at 9:15PM Apr 22, 2024Observed: 0.85 ft at 9:30PM Apr 22, 2024Observed: 0.85 ft at 9:45PM Apr 22, 2024Observed: 0.85 ft at 10:00PM Apr 22, 2024Observed: 0.84 ft at 10:15PM Apr 22, 2024Observed: 0.84 ft at 10:30PM Apr 22, 2024Observed: 0.84 ft at 10:45PM Apr 22, 2024Observed: 0.84 ft at 11:00PM Apr 22, 2024Observed: 0.83 ft at 11:15PM Apr 22, 2024Observed: 0.83 ft at 11:30PM Apr 22, 2024Observed: 0.83 ft at 11:45PM Apr 22, 2024Observed: 0.83 ft at 12:00AM Apr 23, 2024Observed: 0.83 ft at 12:15AM Apr 23, 2024Observed: 0.83 ft at 12:30AM Apr 23, 2024Observed: 0.83 ft at 12:45AM Apr 23, 2024Observed: 0.82 ft at 1:00AM Apr 23, 2024Observed: 0.82 ft at 1:15AM Apr 23, 2024Observed: 0.82 ft at 1:30AM Apr 23, 2024Observed: 0.82 ft at 1:45AM Apr 23, 2024Observed: 0.82 ft at 2:00AM Apr 23, 2024Observed: 0.82 ft at 2:15AM Apr 23, 2024Observed: 0.82 ft at 2:30AM Apr 23, 2024Observed: 0.82 ft at 2:45AM Apr 23, 2024Observed: 0.81 ft at 3:00AM Apr 23, 2024Forecast: 0.8 ft 8:00AM Apr 23, 2024Forecast: 0.7 ft 2:00PM Apr 23, 2024Forecast: 0.7 ft 8:00PM Apr 23, 2024Forecast: 0.8 ft 2:00AM Apr 24, 2024Highest Forecast: 1 ft 8:00AM Apr 24, 2024Highest Forecast: 1 ft 2:00PM Apr 24, 2024Forecast: 0.9 ft 8:00PM Apr 24, 2024Forecast: 0.8 ft 2:00AM Apr 25, 2024Forecast: 0.7 ft 8:00AM Apr 25, 2024USGS--Water Resources of the United StatesMFDP1(plotting HGIRG) Graph Created (3:33AM Apr 23, 2024)ObservedForecast (issued 9:33AM Apr 22)Latest observed value: 0.81 ft at 3:00 AM EDT 23-Apr-2024. Flood Stage is 12 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Tioga River at Mansfield are issued routinely year-round.
Return to Area Map
Downstream Gauge Downstream Gauge - other Tioga-Hammond Dam on Tioga River
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 13
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): 0

Historic Crests
(1) 20.13 ft on 09/25/1975
(2) 18.87 ft on 01/19/1996
(3) 18.57 ft on 08/18/1994
(4) 17.98 ft on 06/22/1972
(5) 16.50 ft on 12/02/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.08 ft on 09/08/2011
(2) 12.30 ft on 04/02/2005
(3) 9.09 ft on 01/14/2005
(4) 14.21 ft on 09/18/2004
(5) 16.50 ft on 12/02/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -15.00 ft on 09/13/1991

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
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
20.5 FEMA 0.2% Annunal Chance Flood Level (500-year flood).
20.1 Flood of record from September 1975. Flood waters begin to reach the West Hill Road bridge in Convington.
19 FEMA 1% Annunal Chance Flood Level (100-year flood).
16.5 FEMA 2% Annunal Chance Flood Level (50-year flood). Flood waters begin to reach the Route 660 bridge on the north side of Covington and the North Williamson Road bridge just south of Covington.
16 Flood waters begin to reach the Spencer Road Bridge.
14 FEMA 10% Annunal Chance Flood Level (10-year flood).
12 Water begins to affect several homes and a business along business Route 15 south of the city of Mansfield next to Canoe Creek.
Photos
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream
About This Location Collapse

Latitude: 41.796944° N, Longitude: 77.080556° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 1121.28 1133.28 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) 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
State College Weather Forecast Office
328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 954-6400
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities