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Daily Reservoir Report and Forecast

 

DAILY RESERVOIR SUMMARY FOR: 22-May-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 4% 1239.4 1306.5 1327.5 1364.5 1329.64 2610
Tionesta 2% 1084.6 1169.6 1089.59 400
Union City 1% 1209.7     1277.7 1223.17 330
Woodcock 2% 1161.9 1164.8 1180.4 1208.4 1181.31 25
East Branch 0% 1554.8 1622.8 1649.8 1684.8 1649.91 110
Mahoning 3% 1074.3   1097.1 1161.1 1097.11 60
Crooked Creek 3% 837.4 917.4 844.28 225
Conemaugh 2% 899.2 974.2 904.28 1600
Loyalhanna 3% 909.5     974.5 922.33 250
Stonewall Jackson 0% 1037.8 1067.5 1072.5 1081.3 1071.96 65
Tygart 0% 1009.5 1039.5 1093.5 1166.5 1093.75 480
Youghiogheny 0% 1343.4 1418.4 1438.4 1469.4 1437.58 300
Michael J. Kirwan 0% 950.5 980.6 985.1 992.6 983.99 95
Berlin 0% 979.3 1015.9 1024.0 1031.3 1023.23 90
Lake Milton 5% 929.4 939.4 947.4 950.4 947.57 95
Mosquito 0% 880.3 899.2 900.7 903.3 900.70 25
Shenango 2% 883.7 886.7 894.7 917.7 895.45 455
                      FORECAST FOR THE FOLLOWING THREE DAYS
  23-May-2015   24-May-2015   25-May-2015
         7AM        7AM          7AM        7AM          7AM        7AM
        POOL  OUTFLOW         POOL  OUTFLOW         POOL  OUTFLOW
RESERVOIR           ELEV        CFS         ELEV        CFS         ELEV        CFS
Allegheny   1329.5 3000 1329.3 3000 1329.1 3000
Tionesta   1089.5 400 1089.3 400 1089.1 400
Union City   1221.9 250 1220.4 238 1218.8 226
Woodcock   1181.2 25 1181.2 25 1181.1 25
East Branch   1649.9 65 1649.9 65 1649.9 65
Mahoning   1097.7 60 1098.3 60 1098.8 60
Crooked Creek   843.8 225 843.7 140 843.5 140
Conemaugh   903.8 1600 903.2 1600 902.5 1600
Loyalhanna   922.2 250 922.4 170 922.5 170
Stonewall Jackson   1071.9 85 1071.9 85 1071.8 85
Tygart   1093.7 480 1093.6 480 1093.5 480
Youghiogheny   1437.4 500 1437.2 500 1437.0 500
Michael J. Kirwan   983.9 110 983.8 110 983.7 110
Berlin   1023.2 90 1023.2 90 1023.1 90
Lake Milton   947.6 95 947.6 95 947.6 95
Mosquito   900.7 25 900.7 25 900.7 25
Shenango   895.4 455 895.3 455 895.3 300
  FLOOD STORAGE USED                  SNOW ON THE GROUND
District-wide 2.4%          SNOW     WATER
Allegheny Basin 3.1%          DEPTH   CONTENT
Monongahela Basin 0.2% BASIN        INCHES     INCHES
Beaver Basin 1.3% 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