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  NOTICE:There is a service interruption for a number of stream gauges nationwide due to the Global Positioning System (GPS) Rollover that occurred on April 6 at 23:59 GMT. The National Weather Service is working with federal, state, and local partners to ensure those affected gauges obtain the necessary updates to resume data transmission. We apologize for the service interruption and hope to have the data restored as soon as possible.

Hydrograph River at a Glance Download
Tulpehocken Creek at Blue Marsh Dam Pool (ft)Highest Observation: 289.16 ft at 6:30AM Apr 19, 2019Observed: 289.14 ft at 7:00AM Apr 19, 2019Observed: 289.13 ft at 7:30AM Apr 19, 2019Observed: 289.13 ft at 8:00AM Apr 19, 2019Observed: 289.07 ft at 8:30AM Apr 19, 2019Observed: 289.09 ft at 9:00AM Apr 19, 2019Observed: 289.06 ft at 9:30AM Apr 19, 2019Observed: 289.02 ft at 10:00AM Apr 19, 2019Observed: 289.02 ft at 10:30AM Apr 19, 2019Observed: 289.01 ft at 11:00AM Apr 19, 2019Observed: 288.96 ft at 11:30AM Apr 19, 2019Observed: 288.96 ft at 12:00PM Apr 19, 2019Observed: 288.96 ft at 12:30PM Apr 19, 2019Observed: 288.92 ft at 1:00PM Apr 19, 2019Observed: 288.91 ft at 1:30PM Apr 19, 2019Observed: 288.89 ft at 2:00PM Apr 19, 2019Observed: 288.93 ft at 2:30PM Apr 19, 2019Observed: 288.87 ft at 3:00PM Apr 19, 2019Observed: 288.89 ft at 3:30PM Apr 19, 2019Observed: 288.89 ft at 4:00PM Apr 19, 2019Observed: 288.89 ft at 4:30PM Apr 19, 2019Observed: 288.9 ft at 5:00PM Apr 19, 2019Observed: 288.9 ft at 5:01PM Apr 19, 2019Observed: 288.88 ft at 5:30PM Apr 19, 2019Observed: 288.9 ft at 6:00PM Apr 19, 2019Observed: 288.89 ft at 6:30PM Apr 19, 2019Observed: 288.88 ft at 7:00PM Apr 19, 2019Observed: 288.89 ft at 7:30PM Apr 19, 2019Observed: 288.88 ft at 8:00PM Apr 19, 2019Observed: 288.9 ft at 8:30PM Apr 19, 2019Observed: 288.91 ft at 9:00PM Apr 19, 2019Observed: 288.92 ft at 9:30PM Apr 19, 2019Observed: 288.92 ft at 10:00PM Apr 19, 2019Observed: 288.91 ft at 10:30PM Apr 19, 2019Observed: 288.9 ft at 11:00PM Apr 19, 2019Observed: 288.93 ft at 11:30PM Apr 19, 2019Observed: 288.94 ft at 12:00AM Apr 20, 2019Observed: 288.94 ft at 12:30AM Apr 20, 2019Observed: 288.94 ft at 1:00AM Apr 20, 2019Observed: 288.95 ft at 1:30AM Apr 20, 2019Observed: 288.94 ft at 2:00AM Apr 20, 2019Observed: 288.94 ft at 2:30AM Apr 20, 2019Observed: 288.96 ft at 3:00AM Apr 20, 2019Observed: 288.95 ft at 3:30AM Apr 20, 2019Observed: 288.96 ft at 4:00AM Apr 20, 2019Observed: 288.96 ft at 4:30AM Apr 20, 2019Observed: 288.97 ft at 5:00AM Apr 20, 2019Observed: 288.96 ft at 5:30AM Apr 20, 2019Observed: 288.97 ft at 6:00AM Apr 20, 2019Observed: 288.98 ft at 6:30AM Apr 20, 2019Observed: 288.98 ft at 7:00AM Apr 20, 2019Observed: 288.98 ft at 7:30AM Apr 20, 2019Observed: 288.98 ft at 8:00AM Apr 20, 2019Observed: 288.99 ft at 8:30AM Apr 20, 2019Observed: 288.97 ft at 9:00AM Apr 20, 2019Observed: 288.97 ft at 9:30AM Apr 20, 2019Observed: 288.98 ft at 10:00AM Apr 20, 2019Observed: 288.99 ft at 10:30AM Apr 20, 2019Observed: 288.97 ft at 11:00AM Apr 20, 2019Observed: 288.98 ft at 11:30AM Apr 20, 2019Observed: 288.97 ft at 12:00PM Apr 20, 2019Observed: 288.98 ft at 12:30PM Apr 20, 2019Observed: 288.95 ft at 1:00PM Apr 20, 2019Observed: 288.98 ft at 1:30PM Apr 20, 2019Observed: 288.98 ft at 2:00PM Apr 20, 2019Observed: 288.95 ft at 2:30PM Apr 20, 2019Observed: 288.96 ft at 3:00PM Apr 20, 2019Observed: 288.99 ft at 3:30PM Apr 20, 2019Observed: 288.97 ft at 4:00PM Apr 20, 2019Observed: 288.97 ft at 4:30PM Apr 20, 2019Observed: 288.96 ft at 5:00PM Apr 20, 2019Observed: 288.99 ft at 5:30PM Apr 20, 2019Observed: 288.97 ft at 6:00PM Apr 20, 2019Observed: 288.96 ft at 6:30PM Apr 20, 2019Observed: 288.97 ft at 7:00PM Apr 20, 2019Observed: 288.96 ft at 7:30PM Apr 20, 2019Observed: 288.96 ft at 8:00PM Apr 20, 2019Observed: 288.95 ft at 8:30PM Apr 20, 2019Observed: 288.95 ft at 9:00PM Apr 20, 2019Observed: 288.95 ft at 9:30PM Apr 20, 2019Observed: 288.94 ft at 10:00PM Apr 20, 2019Observed: 288.94 ft at 10:30PM Apr 20, 2019Observed: 288.94 ft at 11:00PM Apr 20, 2019Observed: 288.94 ft at 11:30PM Apr 20, 2019Observed: 288.94 ft at 12:00AM Apr 21, 2019Observed: 288.94 ft at 12:30AM Apr 21, 2019Observed: 288.94 ft at 1:00AM Apr 21, 2019Observed: 288.93 ft at 1:30AM Apr 21, 2019Observed: 288.93 ft at 2:00AM Apr 21, 2019Observed: 288.93 ft at 2:30AM Apr 21, 2019Observed: 288.93 ft at 3:00AM Apr 21, 2019Observed: 288.93 ft at 3:30AM Apr 21, 2019Observed: 288.91 ft at 4:00AM Apr 21, 2019Observed: 288.92 ft at 4:30AM Apr 21, 2019Observed: 288.91 ft at 5:00AM Apr 21, 2019Observed: 288.91 ft at 5:01AM Apr 21, 2019Observed: 288.91 ft at 5:30AM Apr 21, 2019Observed: 288.91 ft at 6:00AM Apr 21, 2019Observed: 288.9 ft at 6:30AM Apr 21, 2019Observed: 288.9 ft at 7:00AM Apr 21, 2019Observed: 288.91 ft at 7:30AM Apr 21, 2019Observed: 288.91 ft at 8:00AM Apr 21, 2019Observed: 288.91 ft at 8:30AM Apr 21, 2019Observed: 288.92 ft at 9:00AM Apr 21, 2019Observed: 288.92 ft at 9:30AM Apr 21, 2019Observed: 288.93 ft at 10:00AM Apr 21, 2019Observed: 288.93 ft at 10:30AM Apr 21, 2019Observed: 288.94 ft at 11:00AM Apr 21, 2019Observed: 288.93 ft at 11:30AM Apr 21, 2019Observed: 288.94 ft at 12:00PM Apr 21, 2019Observed: 288.94 ft at 12:30PM Apr 21, 2019Observed: 288.95 ft at 1:00PM Apr 21, 2019Observed: 288.95 ft at 1:30PM Apr 21, 2019Observed: 288.95 ft at 2:00PM Apr 21, 2019Observed: 288.96 ft at 2:30PM Apr 21, 2019Observed: 288.96 ft at 3:00PM Apr 21, 2019Observed: 288.96 ft at 3:30PM Apr 21, 2019Observed: 288.97 ft at 4:00PM Apr 21, 2019Observed: 288.96 ft at 4:30PM Apr 21, 2019Observed: 288.97 ft at 5:00PM Apr 21, 2019Observed: 288.97 ft at 5:01PM Apr 21, 2019Observed: 288.97 ft at 5:30PM Apr 21, 2019Observed: 288.98 ft at 6:00PM Apr 21, 2019Observed: 288.99 ft at 6:30PM Apr 21, 2019Observed: 288.99 ft at 7:00PM Apr 21, 2019Observed: 288.99 ft at 7:30PM Apr 21, 2019Observed: 288.99 ft at 8:00PM Apr 21, 2019Observed: 289 ft at 8:30PM Apr 21, 2019Observed: 289 ft at 9:00PM Apr 21, 2019Observed: 289.01 ft at 9:30PM Apr 21, 2019Observed: 289.01 ft at 10:00PM Apr 21, 2019Observed: 289.01 ft at 10:30PM Apr 21, 2019Observed: 289.01 ft at 11:00PM Apr 21, 2019Observed: 289.02 ft at 11:30PM Apr 21, 2019Observed: 289.02 ft at 12:00AM Apr 22, 2019Observed: 289.02 ft at 12:30AM Apr 22, 2019Observed: 289.02 ft at 1:00AM Apr 22, 2019Observed: 289.03 ft at 1:30AM Apr 22, 2019Observed: 289.03 ft at 2:00AM Apr 22, 2019Observed: 289.03 ft at 2:30AM Apr 22, 2019Observed: 289.04 ft at 3:00AM Apr 22, 2019Observed: 289.04 ft at 3:30AM Apr 22, 2019Observed: 289.04 ft at 4:00AM Apr 22, 2019Observed: 289.04 ft at 4:30AM Apr 22, 2019Observed: 289.05 ft at 5:00AM Apr 22, 2019Observed: 289.05 ft at 5:01AM Apr 22, 2019USGS--Water Resources of the United StatesPLVP1(plotting HPIRG) Graph Created (6:17AM Apr 22, 2019)ObservedLatest observed value: 289.05 ft at 5:01 AM EDT 22-Apr-2019.
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Tulpehocken Creek at Blue Marsh Dam. Only observed stages are available for this point.
Return to Area Map
Downstream Gauge Downstream Gauge - below Blue Marsh Dam
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 306
Low Stage (in feet): 0

Historic Crests
(1) 301.65 ft on 04/17/1983

(P): Preliminary values subject to further review.

Recent Crests
(1) 301.65 ft on 04/17/1983

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

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
309 Rebers Bridge Road is subject to closures.
303 Route 183 floods between Mt. Pleasant and Bernville.
295 The beach at the Dry Brooks Day Use Center is subject to closure.
292 Boat launch ramps around the lake are subject to closure.
Photos
(1) Blue Marsh Dam & Gage
About This Location Collapse

Latitude: 40.379167° N, Longitude: 76.033056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0 ft 307 ft  
Additional Information Collapse
ESP Expected Values plot
Probabilistic QPF Trace Ensemble
River Level Exceedence Chart
During winter months, cold and ice may result in inaccurate real-time stream stage and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.
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
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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Page last modified: 4-Mar-2019 11:30 PM
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