Daily Reservoir and Pass-Thru Status Report
July 9, 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%
07/09/2021 204.2 322,313 48.6% 91.9 216,174 84.3% 538,487 58.6% 44.0 161,085 100.0%
07/08/2021 204.2 322,313 48.6% 91.7 212,485 82.9% 534,798 58.2% 44.0 161,085 100.0%
06/09/2021 204.5 327,318 49.4% 91.7 212,485 82.9% 539,803 58.7% 44.0 161,085 100.0%
07/09/2020 201.1 272,748 41.1% 89.1 167,241 65.2% 439,989 47.9% 44.0 161,085 100.0%
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
June YTD Remaining June YTD Remaining
07/08/2021 137 933 348 6,844 24,596 3,816 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
07/08/2021 0 428 6,454 8,516 43,388 07/09/2021 7:15 AM 14.82
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/08/2021 MTD YTD 07/08/2021 MTD YTD 07/08/2021 MTD YTD
Air Temp 86     86        
Evaporation 29 1,498 33,730 65 1,208 30,664 94 2,706 64,394
Rainfall 2.96 5.36 22.48 1.70 7.06 26.99      
Stream Flows
Gauging Station 07/08/2021 MTD
NTRT Nueces River at Three Rivers, Texas 641 2,269
NRTT Nueces River at Tilden, Texas 9 121
FRTT Frio River at Tilden, Texas 15 61
SMTT San Miguel Creek at Tilden, Texas 705 1,356
ARWT Atascosa River at Whitsett, Texas 671 1,199
CCR Release from Choke Canyon Reservoir 58 461
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 0 4,913
NCAT Nueces River at Calallen, Texas 2,700 5,792
RBP Rincon Bayou Pipeline 227 1,835
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 1,303 3,225
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 4,500   4,500
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   -6,416
Return Flow Credit Effective   500
Required Passthru Monthly Target 4,500   3,225
Reservoir Inflow 3,225
Estuary Inflows (NCAT + RBP) 7,627
Passthru Surplus / -Deficit -1,514
Report Generated 7/9/2021 at 9:43:05 AM