Daily Reservoir and Pass-Thru Status Report
June 20, 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%
06/20/2021 204.4 325,645 49.1% 91.8 214,326 83.6% 539,971 58.7% 44.0 161,085 100.0%
06/19/2021 204.4 325,645 49.1% 91.9 216,174 84.3% 541,819 58.9% 44.0 161,085 100.0%
05/20/2021 200.3 260,689 39.3% 87.4 140,670 54.9% 401,359 43.7% 44.0 161,085 100.0%
06/20/2020 201.6 280,455 42.3% 89.5 173,834 67.8% 454,289 49.4% 43.4 155,551 96.6%
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
06/19/2021 120 2,854 0 6,497 24,943 3,684 8,184 3,816
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
06/19/2021 68 375 5,312 2,164 304,479 06/20/2021 7:15 AM 9.83
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/19/2021 MTD YTD 06/19/2021 MTD YTD 06/19/2021 MTD YTD
Air Temp 90     91        
Evaporation 331 5,507 29,341 322 4,813 26,429 653 10,320 55,770
Rainfall 0.00 1.61 16.5 0.00 2.49 17.08      
Stream Flows
Gauging Station 06/19/2021 MTD
NTRT Nueces River at Three Rivers, Texas 308 61,275
NRTT Nueces River at Tilden, Texas 80 20,982
FRTT Frio River at Tilden, Texas 20 34,903
SMTT San Miguel Creek at Tilden, Texas 6 7,633
ARWT Atascosa River at Whitsett, Texas 61 41,085
CCR Release from Choke Canyon Reservoir 58 881
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 705 9,069
NCAT Nueces River at Calallen, Texas 316 5,394
RBP Rincon Bayou Pipeline 232 3,508
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 276 102,929
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 23,000   23,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   619
Return Flow Credit Effective   500
Required Passthru Monthly Target 23,000   23,000
Reservoir Inflow 102,929
Estuary Inflows (NCAT + RBP) 8,902
Passthru Surplus / -Deficit -12,979
Report Generated 6/20/2021 at 9:00:38 AM