Daily Reservoir and Pass-Thru Status Report
January 12, 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%
01/12/2021 198.4 233,606 35.2% 86.7 130,369 50.9% 363,975 39.6% 43.9 160,156 99.4%
01/11/2021 198.4 233,606 35.2% 86.8 131,815 51.4% 365,421 39.8% 44.1 161,085 100.0%
12/12/2020 198.6 236,355 35.7% 87.0 134,734 52.6% 371,089 40.4% 43.9 160,156 99.4%
01/12/2020 202.8 299,436 45.2% 90.5 190,909 74.5% 490,345 53.3% 38.9 117,295 72.8%
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
December YTD Remaining December YTD Remaining
01/11/2021 66 1,111 3,197 30,797 643 0 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
01/11/2021 68 372 372 2,620 38,118 01/12/2021 7:15 AM 10.01
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  01/11/2021 MTD YTD 01/11/2021 MTD YTD 01/11/2021 MTD YTD
Air Temp 48     49        
Evaporation 40 808 808 84 952 952 124 1,760 1,760
Rainfall 0.00 0.89 0.89 0.00 0.7 0.7      
Stream Flows
Gauging Station 01/11/2021 MTD
NTRT Nueces River at Three Rivers, Texas 71 824
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 3
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 7 94
CCR Release from Choke Canyon Reservoir 58 633
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 93 1,317
NCAT Nueces River at Calallen, Texas 2 69
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 14 193
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 1,200   1,200
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   231
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   193
Reservoir Inflow 193
Estuary Inflows (NCAT + RBP) 69
Passthru Surplus / -Deficit 0
Report Generated 1/12/2021 at 10:18:04 AM