Daily Reservoir and Pass-Thru Status Report
August 17, 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%
08/17/2021 204.5 327,318 49.4% 93.1 238,806 93.2% 566,124 61.6% 44.0 161,085 100.0%
08/16/2021 204.5 327,318 49.4% 93.0 236,887 92.4% 564,205 61.4% 44.0 161,085 100.0%
07/17/2021 205.0 335,741 50.7% 93.1 238,806 93.2% 574,547 62.5% 43.9 160,156 99.4%
08/17/2020 200.1 257,729 38.9% 88.5 157,605 61.5% 415,334 45.2% 43.7 158,306 98.3%
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
July YTD Remaining July YTD Remaining
08/16/2021 107 1,818 3,013 9,857 21,583 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
08/16/2021 39 475 7,459 798 27,254 08/17/2021 7:15 AM 7.92
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  08/16/2021 MTD YTD 08/16/2021 MTD YTD 08/16/2021 MTD YTD
Air Temp 93     91        
Evaporation 293 5,268 45,877 325 4,610 41,784 618 9,878 87,661
Rainfall 0.00 0.68 24.01 0.15 1.29 30.23      
Stream Flows
Gauging Station 08/16/2021 MTD
NTRT Nueces River at Three Rivers, Texas 1,092 10,057
NRTT Nueces River at Tilden, Texas 709 3,167
FRTT Frio River at Tilden, Texas 0 185
SMTT San Miguel Creek at Tilden, Texas 0 1,457
ARWT Atascosa River at Whitsett, Texas 33 3,664
CCR Release from Choke Canyon Reservoir 58 921
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 210 2,803
NCAT Nueces River at Calallen, Texas 4 232
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 1,035 10,777
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 5,000   5,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   2,500
Return Flow Credit Effective 08/01/2021 500
Required Passthru Monthly Target 5,000   5,000
Reservoir Inflow 10,777
Estuary Inflows (NCAT + RBP) 232
Passthru Surplus / -Deficit -1,768
Report Generated 9/1/2021 at 4:38:01 PM