Daily Reservoir and Pass-Thru Status Report
June 9, 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%
06/09/2021 204.5 327,318 49.4% 91.7 212,485 82.9% 539,803 58.7% 44.0 161,085 100.0%
06/08/2021 204.4 325,645 49.1% 91.1 201,561 78.6% 527,206 57.4% 43.9 160,156 99.4%
05/09/2021 197.3 218,822 33.0% 85.6 115,055 44.9% 333,877 36.3% 43.9 160,156 99.4%
06/09/2020 201.8 283,575 42.8% 89.9 180,563 70.4% 464,138 50.5% 43.8 159,229 98.8%
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
06/08/2021 175 1,154 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
06/08/2021 0 0 4,937 33,150 248,859 06/09/2021 7:15 AM 27.09
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/08/2021 MTD YTD 06/08/2021 MTD YTD 06/08/2021 MTD YTD
Air Temp 89     89        
Evaporation 293 1,761 25,595 278 1,654 23,270 571 3,415 48,865
Rainfall 0.00 1.02 15.91 0.00 2.3 16.89      
Stream Flows
Gauging Station 06/08/2021 MTD
NTRT Nueces River at Three Rivers, Texas 8,635 48,978
NRTT Nueces River at Tilden, Texas 1,445 14,659
FRTT Frio River at Tilden, Texas 1,699 32,762
SMTT San Miguel Creek at Tilden, Texas 48 7,497
ARWT Atascosa River at Whitsett, Texas 548 39,841
CCR Release from Choke Canyon Reservoir 58 248
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 421 2,940
NCAT Nueces River at Calallen, Texas 86 3,503
RBP Rincon Bayou Pipeline 222 947
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 10,324 88,989
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 88,989
Estuary Inflows (NCAT + RBP) 4,450
Passthru Surplus / -Deficit -17,431
Report Generated 6/9/2021 at 9:09:52 AM