Daily Reservoir and Pass-Thru Status Report
June 22, 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%
06/22/2021 204.3 323,977 48.9% 91.7 212,485 82.9% 536,462 58.4% 44.0 161,085 100.0%
06/21/2021 204.4 325,645 49.1% 91.7 212,485 82.9% 538,130 58.5% 43.9 160,156 99.4%
05/22/2021 201.2 274,279 41.4% 88.1 151,341 59.0% 425,620 46.3% 44.0 161,085 100.0%
06/22/2020 201.4 277,357 41.8% 89.4 172,173 67.2% 449,530 48.9% 43.3 154,639 96.0%
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
06/21/2021 119 3,092 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
06/21/2021 67 510 5,447 1,697 308,048 06/22/2021 7:15 AM 9.31
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/21/2021 MTD YTD 06/21/2021 MTD YTD 06/21/2021 MTD YTD
Air Temp 91     92        
Evaporation 252 6,002 29,836 278 5,359 26,975 530 11,361 56,811
Rainfall 0.00 1.61 16.5 0.00 2.49 17.08      
Stream Flows
Gauging Station 06/21/2021 MTD
NTRT Nueces River at Three Rivers, Texas 252 61,801
NRTT Nueces River at Tilden, Texas 49 21,094
FRTT Frio River at Tilden, Texas 15 34,934
SMTT San Miguel Creek at Tilden, Texas 5 7,643
ARWT Atascosa River at Whitsett, Texas 52 41,195
CCR Release from Choke Canyon Reservoir 58 996
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 701 10,473
NCAT Nueces River at Calallen, Texas 314 6,059
RBP Rincon Bayou Pipeline 230 3,969
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 214 103,382
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 103,382
Estuary Inflows (NCAT + RBP) 10,028
Passthru Surplus / -Deficit -11,853
Report Generated 6/22/2021 at 8:46:38 AM