Daily Reservoir and Pass-Thru Status Report
October 8, 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%
10/08/2021 203.5 310,778 46.9% 92.2 221,752 86.5% 532,530 57.9% 42.8 150,120 93.2%
10/07/2021 203.5 310,778 46.9% 92.3 223,623 87.2% 534,401 58.1% 42.8 150,120 93.2%
09/08/2021 204.0 318,997 48.1% 92.5 227,383 88.7% 546,380 59.4% 43.6 157,385 97.7%
10/08/2020 199.5 249,001 37.6% 87.9 148,255 57.8% 397,256 43.2% 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
September YTD Remaining September YTD Remaining
10/07/2021 141 999 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
10/07/2021 0 0 9,327 2,005 18,679 10/08/2021 7:15 AM 9.13
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  10/07/2021 MTD YTD 10/07/2021 MTD YTD 10/07/2021 MTD YTD
Air Temp 88     87        
Evaporation 286 1,459 62,846 229 1,484 55,336 515 2,943 118,182
Rainfall 0.00 0.02 26.94 0.00 1.6 35.6      
Stream Flows
Gauging Station 10/07/2021 MTD
NTRT Nueces River at Three Rivers, Texas 100 1,153
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 1
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 23 536
CCR Release from Choke Canyon Reservoir 58 403
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 150 1,961
NCAT Nueces River at Calallen, Texas 73 4,172
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 42 751
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   751
Reservoir Inflow 751
Estuary Inflows (NCAT + RBP) 4,172
Passthru Surplus / -Deficit 4,086
Report Generated 10/8/2021 at 8:53:25 AM