Daily Reservoir and Pass-Thru Status Report
November 30, 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%
11/30/2021 202.5 294,634 44.5% 91.6 210,649 82.2% 505,283 55.0% 43.9 160,156 99.4%
11/29/2021 202.5 294,634 44.5% 91.6 210,649 82.2% 505,283 55.0% 43.9 160,156 99.4%
10/30/2021 203.0 302,657 45.7% 92.0 218,027 85.1% 520,684 56.6% 43.7 158,306 98.3%
11/30/2020 198.8 239,125 36.1% 87.3 139,175 54.3% 378,300 41.2% 43.6 157,385 97.7%
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
11/29/2021 131 3,830 4,285 20,603 10,837 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
11/29/2021 0 0 9,327 2,104 83,886 11/30/2021 7:15 AM 9.16
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  11/29/2021 MTD YTD 11/29/2021 MTD YTD 11/29/2021 MTD YTD
Air Temp 69     71        
Evaporation 111 4,100 72,526 96 4,360 65,165 207 8,460 137,691
Rainfall 0.00 0.91 28.35 0.00 1.43 38.19      
Stream Flows
Gauging Station 11/29/2021 MTD
NTRT Nueces River at Three Rivers, Texas 75 2,273
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 5
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 2 145
CCR Release from Choke Canyon Reservoir 58 1,669
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 124 4,582
NCAT Nueces River at Calallen, Texas 1 99
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 18 608
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 4,000   4,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied 11/01/2021 2,000
Return Flow Credit Effective   500
Required Passthru Monthly Target 4,000   608
Reservoir Inflow 608
Estuary Inflows (NCAT + RBP) 99
Passthru Surplus / -Deficit 1,990
Report Generated 11/30/2021 at 8:58:20 AM