Daily Reservoir and Pass-Thru Status Report
November 1, 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%
11/01/2021 203.0 302,657 45.7% 91.9 216,174 84.3% 518,831 56.4% 43.7 158,306 98.3%
10/31/2021 203.0 302,657 45.7% 91.9 216,174 84.3% 518,831 56.4% 43.7 158,306 98.3%
10/01/2021 203.6 312,414 47.1% 92.2 221,752 86.5% 534,166 58.1% 42.9 151,018 93.8%
11/01/2020 199.0 241,915 36.5% 87.5 142,172 55.5% 384,087 41.8% 43.2 153,730 95.4%
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
October YTD Remaining October YTD Remaining
10/31/2021 134 4,279 0 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
10/31/2021 0 0 9,327 1,985 154,935 11/01/2021 7:15 AM 9.02
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  10/31/2021 MTD YTD 10/31/2021 MTD YTD 10/31/2021 MTD YTD
Air Temp 85     84        
Evaporation 226 7,039 68,426 280 6,953 60,805 506 13,992 129,231
Rainfall 0.00 0.52 27.44 0.00 2.76 36.76      
Stream Flows
Gauging Station 10/31/2021 MTD
NTRT Nueces River at Three Rivers, Texas 75 4,336
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 22
SMTT San Miguel Creek at Tilden, Texas 0 99
ARWT Atascosa River at Whitsett, Texas 2 1,465
CCR Release from Choke Canyon Reservoir 58 1,785
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 160 5,262
NCAT Nueces River at Calallen, Texas 0 4,287
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 17 2,672
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   2,672
Reservoir Inflow 2,672
Estuary Inflows (NCAT + RBP) 4,287
Passthru Surplus / -Deficit 2,279
Report Generated 11/1/2021 at 8:59:09 AM