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Daily Reservoir Report and Forecast

 

DAILY RESERVOIR SUMMARY FOR: 20-Apr-2015
   FLOOD     ACTUAL FOR TODAY
 STORAGE                  POOL ELEVATIONS (NAVD88)          7AM        7AM
 CAPACITY     MINIMUM     WINTER    SUMMER          FULL         POOL  OUTFLOW
RESERVOIR     USED         POOL   MAX POOL   MAX POOL          POOL         ELEV        CFS
Allegheny 0% 1239.4 1306.5 1327.5 1364.5 1327.43 6280
Tionesta 2% 1084.6 1169.6 1088.45 1590
Union City 12% 1209.7     1277.7 1244.13 1000
Woodcock 6% 1161.9 1164.8 1180.4 1208.4 1180.77 72
East Branch 0% 1554.8 1622.8 1649.8 1684.8 1647.59 57
Mahoning 1% 1074.3   1097.1 1161.1 1078.78 920
Crooked Creek 2% 837.4 917.4 843.76 420
Conemaugh 0% 899.2 974.2 900.38 3350
Loyalhanna 3% 909.5     974.5 921.84 255
Stonewall Jackson 4% 1037.8 1067.5 1072.5 1081.3 1072.89 470
Tygart 12% 1009.5 1039.5 1093.5 1166.5 1096.30 3400
Youghiogheny 5% 1343.4 1418.4 1438.4 1469.4 1440.19 1000
Michael J. Kirwan 2% 950.5 980.6 985.1 992.6 985.25 50
Berlin 21% 979.3 1015.9 1024.0 1031.3 1023.64 210
Lake Milton 0% 929.4 939.4 947.4 950.4 947.42 215
Mosquito 3% 880.3 899.2 900.7 903.3 900.82 185
Shenango 1% 883.7 886.7 894.7 917.7 894.65 1020
                      FORECAST FOR THE FOLLOWING THREE DAYS
  21-Apr-2015   22-Apr-2015   23-Apr-2015
         7AM        7AM          7AM        7AM          7AM        7AM
        POOL  OUTFLOW         POOL  OUTFLOW         POOL  OUTFLOW
RESERVOIR           ELEV        CFS         ELEV        CFS         ELEV        CFS
Allegheny   1327.5 5100 1327.6 4100 1327.7 4100
Tionesta   1089.0 1050 1089.2 1050 1089.1 1050
Union City   1241.3 950 1238.0 903 1234.3 857
Woodcock   1181.4 72 1181.5 130 1181.6 130
East Branch   1648.0 57 1648.3 57 1648.6 57
Mahoning   1077.3 790 1075.3 790 1075.4 550
Crooked Creek   844.2 420 843.7 540 843.1 540
Conemaugh   900.2 2230 899.5 2230 899.8 1670
Loyalhanna   922.7 360 923.3 360 923.7 360
Stonewall Jackson   1072.8 470 1072.9 200 1072.9 200
Tygart   1095.8 3400 1094.8 3400 1094.9 2100
Youghiogheny   1440.3 1000 1440.4 1000 1440.4 1000
Michael J. Kirwan   985.3 90 985.3 90 985.3 90
Berlin   1023.6 210 1023.6 210 1023.5 210
Lake Milton   947.4 215 947.4 215 947.4 215
Mosquito   900.8 100 900.8 30 900.8 30
Shenango   894.5 1020 894.4 850 894.5 560
  FLOOD STORAGE USED                  SNOW ON THE GROUND
District-wide 3.0%          SNOW     WATER
Allegheny Basin 1.1%          DEPTH   CONTENT
Monongahela Basin 9.5% BASIN        INCHES     INCHES
Beaver Basin 4.9% Upper Allegheny River 0.0 0.0
Lower Allegheny River 0.0 0.0
Upper Mon. River 0.0 0.0
Lower Mon. River 0.0 0.0
Beaver River 0.0 0.0
Ohio River 0.0 0.0

 

U.S. Army Corps of Engineers: http://www.usace.army.mil/

Pittsburgh District: http://www.lrp.usace.army.mil/

Water Management: http://www.lrp.usace.army.mil/Missions/WaterManagement.aspx

NOTES

This forecast represents our best estimate of reservoir project pool elevations and releases for the next three days.  In general, it assumes no significant rainfall during the forecast period.  Final decisions on all operations (changes in project release) are made on the day of the operation.  Future operations shown on this forecast are as expected, but not promised.

On the top panel, under "Pool Elevations" the following definitions apply:

  • Minumum Pool - the minimum pool elevation for the project.
  • Winter Max Pool - the maximum Winter Pool elevation for the project.
  • Summer Max Pool - the maximum Summer Pool elevation for the project.
  • Full Pool - the elevation of the pool at maximum flood control storage.

The Winter and Summer pool levels are part of the overall maximum conservation pool for each lake, which is the maximum level maintained at each lake throughout the year.  Conservation storage is the water in each lake below the Max Conservation Pool and above Minimum Pool.   Conservation storage is for a variety of purposes, varying from lake to lake, and can include purposes such as water quality control, fish and wildlife, navigation, water supply, recreation, etc.  Some lakes have no allocated conservation storage.  Max Conservation Pools are shown on the Reservoir Plots below.

"Flood Storage Capacity Used" is the amount of the lake's floodwater storage which is already filled.  The lake volume between Max Conservation Pool and Full Pool is the amount of "empty space" that is supposed to be kept available for storing floodwater.      

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This page updated daily by noon Eastern Time

LRP.WaterManagement@usace.army.mil