Daily Reservoir and Pass-Thru Status Report
October 7, 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%
10/07/2021 203.5 310,778 46.9% 92.3 223,623 87.2% 534,401 58.1% 42.8 150,120 93.2%
10/06/2021 203.6 312,414 47.1% 92.3 223,623 87.2% 536,037 58.3% 42.9 151,018 93.8%
09/07/2021 204.0 318,997 48.1% 92.5 227,383 88.7% 546,380 59.4% 43.7 158,306 98.3%
10/07/2020 199.6 250,439 37.8% 87.9 148,255 57.8% 398,694 43.4% 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
10/06/2021 141 858 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
10/06/2021 0 0 9,327 2,600 16,674 10/07/2021 7:15 AM 9.68
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  10/06/2021 MTD YTD 10/06/2021 MTD YTD 10/06/2021 MTD YTD
Air Temp 88     87        
Evaporation 257 1,173 62,560 218 1,255 55,107 475 2,428 117,667
Rainfall 0.00 0.02 26.94 0.00 1.6 35.6      
Stream Flows
Gauging Station 10/06/2021 MTD
NTRT Nueces River at Three Rivers, Texas 116 1,054
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 33 513
CCR Release from Choke Canyon Reservoir 58 345
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 155 1,811
NCAT Nueces River at Calallen, Texas 101 4,099
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 58 709
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   709
Reservoir Inflow 709
Estuary Inflows (NCAT + RBP) 4,099
Passthru Surplus / -Deficit 4,055
Report Generated 10/7/2021 at 8:31:57 AM