Daily Reservoir and Pass-Thru Status Report
January 13, 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%
01/13/2021 198.3 232,238 35.0% 86.7 130,369 50.9% 362,607 39.4% 44.0 161,085 100.0%
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%
12/13/2020 198.7 237,738 35.9% 87.0 134,734 52.6% 372,472 40.5% 43.9 160,156 99.4%
01/13/2020 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
01/12/2021 110 1,221 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
01/12/2021 24 395 395 3,077 41,195 01/13/2021 7:15 AM 10.22
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  01/12/2021 MTD YTD 01/12/2021 MTD YTD 01/12/2021 MTD YTD
Air Temp 44     45        
Evaporation 16 824 824 34 986 986 50 1,810 1,810
Rainfall 0.00 0.89 0.89 0.00 0.7 0.7      
Stream Flows
Gauging Station 01/12/2021 MTD
NTRT Nueces River at Three Rivers, Texas 70 893
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 5 99
CCR Release from Choke Canyon Reservoir 58 691
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 94 1,411
NCAT Nueces River at Calallen, Texas 0 69
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 12 206
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   206
Reservoir Inflow 206
Estuary Inflows (NCAT + RBP) 69
Passthru Surplus / -Deficit 0
Report Generated 1/13/2021 at 8:27:10 AM