Daily Reservoir and Pass-Thru Status Report
July 6, 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%
07/06/2021 204.1 320,653 48.4% 91.2 203,365 79.3% 524,018 57.0% 44.0 161,085 100.0%
07/05/2021 204.1 320,653 48.4% 91.2 203,365 79.3% 524,018 57.0% 44.0 161,085 100.0%
06/06/2021 203.7 314,054 47.4% 89.9 180,563 70.4% 494,617 53.8% 44.0 161,085 100.0%
07/06/2020 201.3 275,815 41.6% 89.2 168,877 65.9% 444,692 48.4% 44.1 161,085 100.0%
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
07/05/2021 111 559 348 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
07/05/2021 67 338 6,363 3,196 12,045 07/06/2021 7:15 AM 10.07
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/05/2021 MTD YTD 07/05/2021 MTD YTD 07/05/2021 MTD YTD
Air Temp 89     87        
Evaporation 270 1,363 33,595 169 973 30,429 439 2,336 64,024
Rainfall 0.72 1.14 18.26 0.42 0.48 20.41      
Stream Flows
Gauging Station 07/05/2021 MTD
NTRT Nueces River at Three Rivers, Texas 176 1,030
NRTT Nueces River at Tilden, Texas 2 110
FRTT Frio River at Tilden, Texas 4 34
SMTT San Miguel Creek at Tilden, Texas 2 22
ARWT Atascosa River at Whitsett, Texas 30 258
CCR Release from Choke Canyon Reservoir 58 288
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 707 3,547
NCAT Nueces River at Calallen, Texas 403 2,116
RBP Rincon Bayou Pipeline 231 1,149
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 125 799
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   0
Required Passthru Monthly Target 4,500   799
Reservoir Inflow 799
Estuary Inflows (NCAT + RBP) 3,265
Passthru Surplus / -Deficit -3,950
Report Generated 7/6/2021 at 8:28:19 AM