Daily Reservoir and Pass-Thru Status Report
May 25, 2021
Reservoir Supply (AcFt); Stream Flow (AcFt); Evaporation (AcFt); Elevation (Ft); Rainfall (Inches); Temperature (°F); Gage Height (Ft MSL)
RESERVOIR STATISTICS
Effective June 24, 2017, updated total reservor capacities for Choke Canyon Reservoir (2012 TWDB Volumetric Survey) and
Lake Corpus Christi (2016 TWDB Volumetric Survey) are being reflected in the Daily Reservoir System and Pass-Thru Status Report
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined Lake Texana
Date Elevation Volume % Capacity Elevation Volume % Capacity Volume % Capacity Elevation Volume % Capacity
FULL 220.5 662,821 100% 94.0 256,339 100% 919,160 100% 44.0 161,085 100%
05/25/2021 201.7 282,012 42.5% 88.5 157,605 61.5% 439,617 47.8% 44.0 161,085 100.0%
05/24/2021 201.7 282,012 42.5% 88.4 156,028 60.9% 438,040 47.7% 44.0 161,085 100.0%
04/25/2021 197.1 216,196 32.6% 85.2 109,768 42.8% 325,964 35.5% 42.4 146,555 91.0%
05/25/2020 201.9 285,141 43.0% 89.5 173,834 67.8% 458,975 49.9% 43.9 160,156 99.4%
LAKE TEXANA WATER SUPPLY*
* The split between Non-Interruptible and Interruptible amounts are updated monthly, usually the first working day of the month, so they reflect the total and remaining amounts as of the end of the previous month
Date Daily Intake MTD Non-Interuptible Interruptible
April YTD Remaining April YTD Remaining
05/24/2021 138 2,725 2,289 6,497 24,943 0 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
05/24/2021 0 494 4,937 10,481 253,413 05/25/2021 7:15 AM 15.55
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/24/2021 MTD YTD 05/24/2021 MTD YTD 05/24/2021 MTD YTD
Air Temp 85     87        
Evaporation 327 5,505 22,134 221 4,646 20,170 548 10,151 42,304
Rainfall 1.19 9.52 12.47 0.01 8.45 12.34      
Stream Flows
Gauging Station 05/24/2021 MTD
NTRT Nueces River at Three Rivers, Texas 443 32,886
NRTT Nueces River at Tilden, Texas 29 2,422
FRTT Frio River at Tilden, Texas 691 39,470
SMTT San Miguel Creek at Tilden, Texas 41 11,497
ARWT Atascosa River at Whitsett, Texas 134 21,020
CCR Release from Choke Canyon Reservoir 58 1,253
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 136 4,489
NCAT Nueces River at Calallen, Texas 230 8,897
RBP Rincon Bayou Pipeline 117 1,171
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 1,117 82,600
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 10,551   10,551
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   85
Return Flow Credit Effective   500
Required Passthru Monthly Target 10,551   10,551
Reservoir Inflow 82,600
Estuary Inflows (NCAT + RBP) 10,068
Passthru Surplus / -Deficit 102
Report Generated 5/25/2021 at 8:02:07 AM