Daily Reservoir and Pass-Thru Status Report
October 5, 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%
10/05/2021 203.6 312,414 47.1% 92.3 223,623 87.2% 536,037 58.3% 43.0 151,919 94.3%
10/04/2021 203.6 312,414 47.1% 92.3 223,623 87.2% 536,037 58.3% 43.1 152,823 94.9%
09/05/2021 204.0 318,997 48.1% 92.6 229,272 89.4% 548,269 59.6% 43.7 158,306 98.3%
10/05/2020 199.6 250,439 37.8% 87.9 148,255 57.8% 398,694 43.4% 44.0 161,085 100.0%
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
September YTD Remaining September YTD Remaining
10/04/2021 144 576 3,474 16,318 15,122 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
10/04/2021 0 0 9,327 3,156 11,315 10/05/2021 7:15 AM 10.16
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  10/04/2021 MTD YTD 10/04/2021 MTD YTD 10/04/2021 MTD YTD
Air Temp 87     88        
Evaporation 248 658 62,045 262 797 54,649 510 1,455 116,694
Rainfall 0.00 0.02 26.94 0.00 1.6 35.6      
Stream Flows
Gauging Station 10/04/2021 MTD
NTRT Nueces River at Three Rivers, Texas 220 797
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 0
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 69 433
CCR Release from Choke Canyon Reservoir 58 230
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 160 1,495
NCAT Nueces River at Calallen, Texas 357 3,813
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 163 567
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 9,000   9,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied 10/01/2021 164
Return Flow Credit Effective   500
Required Passthru Monthly Target 9,000   567
Reservoir Inflow 567
Estuary Inflows (NCAT + RBP) 3,813
Passthru Surplus / -Deficit 3,910
Report Generated 10/5/2021 at 9:41:40 AM