Banner


 
Basin Summaries
 
  Lackawaxen River
  Lehigh River
  Schuylkill River
  Delaware River
 
Reservoir Plots
 
  Jadwin Dam
  Prompton Lake
  FE Walter Dam
  Beltzville Lake
  Blue Marsh Lake
 
Reservoir Releases
 
Damages Prevented
 
Additional Resources
 
  Blue Marsh Lake Information
  FE Walter Dam Information
  Delaware River Basin
    Commission Dashboard
  National Weather Service
  Quantitative Precipitation
    Forecasts
  Philadelphia District Home
 
 
Home
Gage Information Page
Blue Marsh Lake, PA

Provisional Data Subject to Revision
Blue Marsh Lake, PA
Amber Threshold Elevation:292 feet
Red Threshold Elevation:306 feet
Date (ET) Elevation (ft) Storage (ac-ft) Inflow (cfs) Outflow (cfs)
May 23, 2026   4:00 pm 290.09 20342 147 129
May 23, 2026   3:00 pm 290.09 20342 167 129
May 23, 2026   2:00 pm 290.08 20329 147 129
May 23, 2026   1:00 pm 290.08 20329 127 129
May 23, 2026 12:00 pm 290.08 20329 127 127
May 23, 2026 11:00 am 290.09 20342 147 129
May 23, 2026 10:00 am 290.09 20342 146 127
May 23, 2026   9:00 am 290.08 20329 127 127
May 23, 2026   8:00 am 290.08 20329 127 127
May 23, 2026   7:00 am 290.07 20316 88 127
May 23, 2026   6:00 am 290.07 20316 89 127
May 23, 2026   5:00 am 290.08 20329 108 129
May 23, 2026   4:00 am 290.08 20329 89 127
May 23, 2026   3:00 am 290.08 20329 70 127
May 23, 2026   2:00 am 290.08 20329 70 127
May 23, 2026   1:00 am 290.08 20329 51 129
May 23, 2026 12:00 am 290.08 20329 51 129
May 22, 2026 11:00 pm 290.09 20342 70 129
May 22, 2026 10:00 pm 290.09 20342 90 129
May 22, 2026   9:00 pm 290.09 20342 70 129
May 22, 2026   8:00 pm 290.10 20355 70 129
May 22, 2026   7:00 pm 290.11 20367 90 129
May 22, 2026   6:00 pm 290.11 20367 109 129
Report Generated May 23, 2026 05:21 PM

NWS Web Info
USGS Web Info