Daily Reservoir and Pass-Thru Status Report
May 31, 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%
05/31/2021 201.8 283,575 42.8% 88.5 157,605 61.5% 441,180 48.0% 44.0 161,085 100.0%
05/30/2021 201.7 282,012 42.5% 88.5 157,605 61.5% 439,617 47.8% 44.0 161,085 100.0%
05/01/2021 197.1 216,196 32.6% 85.2 109,768 42.8% 325,964 35.5% 43.0 151,919 94.3%
05/31/2020 201.9 285,141 43.0% 90.0 182,266 71.1% 467,407 50.9% 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
May YTD Remaining May YTD Remaining
05/30/2021 137 3,547 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
05/30/2021 0 494 4,937 46,052 420,828 05/31/2021 7:15 AM 27.27
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/30/2021 MTD YTD 05/30/2021 MTD YTD 05/30/2021 MTD YTD
Air Temp 83     83        
Evaporation 228 6,978 23,607 147 5,842 21,366 375 12,820 44,973
Rainfall 0.00 10.09 13.04 0.92 9.58 13.47      
Stream Flows
Gauging Station 05/30/2021 MTD
NTRT Nueces River at Three Rivers, Texas 389 34,825
NRTT Nueces River at Tilden, Texas 0 2,440
FRTT Frio River at Tilden, Texas 13 39,919
SMTT San Miguel Creek at Tilden, Texas 3 11,558
ARWT Atascosa River at Whitsett, Texas 123 21,690
CCR Release from Choke Canyon Reservoir 58 1,598
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 136 5,305
NCAT Nueces River at Calallen, Texas 18 9,194
RBP Rincon Bayou Pipeline 0 1,370
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 347 84,704
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 84,704
Estuary Inflows (NCAT + RBP) 10,564
Passthru Surplus / -Deficit 598
Report Generated 5/31/2021 at 9:37:21 AM