caldwell county regional water and wastewater planning study
caldwell county regional water and wastewater planning study caldwell county regional water and wastewater planning study
TABLE 12-2Caldwell County Water Supplies (ac-ft)Supply Supply Supply SupplyWUG NameSource Name2010 2020 2030 2040CARRIZO-WILCOX AQUIFER Mining 16 10 4 0CARRIZO-WILCOX AQUIFER Manufacturing 84 84 84 84CARRIZO-WILCOX AQUIFER Irrigation 1,037 916 809 714CARRIZO-WILCOX AQUIFER Lockhart 2,310 2,310 2,310 2,310CARRIZO-WILCOX AQUIFER Luling 2,730 2,730 2,730 2,730CARRIZO-WILCOX AQUIFER County-Other 3,173 3,264 2,604 2,698Sub-Total 9,350 9,314 8,541 8,536GUADALUPE RUN-OF-RIVER Luling 99 99 99 99GUADALUPE RUN-OF-RIVER Martindale 198 198 198 198GUADALUPE RUN-OF-RIVER County-Other 613 613 613 613Sub-Total 910 910 910 910CANYON LAKE/RESERVOIR Martindale 50 50 50 50CANYON LAKE/RESERVOIR County-Other 258 258 258 258Sub-Total 308 308 308 308EDWARDS-BFZ AQUIFER County Other 161 161 161 161Sub-Total 161 161 161 161QUEEN CITY AQUIFER Mining 0 0 0 0QUEEN CITY AQUIFER Manufacturing 3 3 3 3QUEEN CITY AQUIFER Irrigation 36 32 28 25QUEEN CITY AQUIFER County-Other 110 110 120 120Sub-Total 149 145 151 148Total Supply 10,878 10,838 10,071 10,063Data obtained from TWDB WUG Supplies at http://www.twdb.state.tx.us/assistance/rwpg/DB02/index.aspTABLE 12-3TWDB County Water Demand ProjectionsBased on Revised Municipal Demands2010-2040 in ac-ftCategory 2010 2020 2030 2040Irrigation 1,044 928 824 733Livestock 918 918 918 918Manufacturing 15 18 21 24Mining 14 15 16 17Municipal 7,781 10,932 14,602 16,803Steam Electric 0 0 0 0Total Demand 9,772 12,811 16,381 18,495TABLE 12-4Caldwell County Additional Water Need (ac-ft)Year 2010 2020 2030 2040Expected Need (1,106) 1,973 6,310 8,432Klotz Associates Project No. 0972.000.000January 201012-3Caldwell County Regional Water and Wastewater Planning StudyFinal Report
Regional facilities in this study will be developed to meet the approximateadditional need of 8,500 ac-ft. Facilities and transmission lines will be sized toprovide the determined need.12.3 Conceptual PlanningIn the evaluation of the population projections it was stated earlier that most of thedevelopment and growth is expected to occur to the north and west between the I-35 and SH 130 Highways. Planning for Caldwell County will develop with theunderstanding that growth will begin from the north and west and then south toLuling. Water systems will be planned to accommodate the growth and allow forfurther regional expansion. This approach will also consider both the HCPUAand the GBRA Mid-Basin Project strategies.12.3.1 Source DevelopmentUtilizing the viable strategies of the HCPUA and the Mid-Basin Project, watersources from the Carrizo-Wilcox and Guadalupe River Basin will be developed.As shown in Exhibit 12-1, the initial delivery of the raw surface water will be toLuling and the delivery of groundwater will be to Lockhart. Luling currentlyoperates a water treatment plant that is capable of diverting up to 4,422 ac-ft/ yr ofwater with a peak rate treatment capacity of 2.779 MGD. The plant delivers thewater to the city of Luling and Lockhart. The transmission line that would routewater to Luling for treatment is shown in a dashed blue line and the existing linethat delivers the water to Lockhart is solid red. The dashed red line indicates thegroundwater route delivered to Lockhart. Another route to consider forgroundwater is taken from a well field south of Caldwell County and delivered toLuling. Well fields that have been located for groundwater development are notedas “Well Area” in Exhibit 12-2. Surface water diversions at the confluence of theSan Marcos and Guadalupe River are noted as “Surface Water Area” in theexhibit.Klotz Associates Project No. 0972.000.000January 201012-4Caldwell County Regional Water and Wastewater Planning StudyFinal Report
- Page 74 and 75: 7.1.2 City of LockhartThe City of L
- Page 76 and 77: Neiderwald. The service area in Cal
- Page 78 and 79: purchase capacity of 6.0 MGD. The a
- Page 80 and 81: Lockhart. The plant is capable of d
- Page 82 and 83: In 1994 GBRA began operating the Ci
- Page 84 and 85: 7.3.5 Sweetwater Utility, LLCSweetw
- Page 86 and 87: TABLE 8-1Caldwell County - TWDB His
- Page 88 and 89: Municipal water demand projections
- Page 90 and 91: applicable. A “P” in the Region
- Page 92 and 93: the modified TSDC Scenario 1.0, sho
- Page 94 and 95: GRAPH 8-3Caldwell County Survey Res
- Page 96 and 97: GRAPH 8-4Caldwell County Yearly Wat
- Page 98 and 99: espectively from the information pr
- Page 100 and 101: TABLE 9-6Caldwell County Projected
- Page 102 and 103: 10.3 United States Environmental Pr
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- Page 108 and 109: TABLE 10-4Estimated Loadings from U
- Page 110 and 111: Klotz Associates Project No. 0972.0
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- Page 118 and 119: An ASR is a viable solution. Ground
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- Page 122 and 123: SECTION 12REGIONAL WATER PLANNING12
- Page 126 and 127: Klotz Associates Project No. 0972.0
- Page 128 and 129: 12.3.2 DistributionThe water will b
- Page 130 and 131: 12.4 Water System Cost EstimatesVar
- Page 132 and 133: 300272GRAPH 13-1Caldwell County OSS
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- Page 136 and 137: 2. The Martindale Regional Facility
- Page 138 and 139: decentralized system providing sewe
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- Page 146 and 147: 14.3 Water Quality Concerns and Sou
- Page 148 and 149: wastewater plant return flows. The
- Page 150 and 151: 14.6 Recommended Load ReductionsLoa
- Page 152 and 153: 14.7.2 Water Quality Development Or
- Page 154 and 155: 14.8.3 Vegetative Filter StripsVege
- Page 156 and 157: Use constructed wetlands to capture
- Page 158 and 159: 14.12 Implementation Recommendation
- Page 160 and 161: Type II reclaimed water is defined
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- Page 164 and 165: Future growth in Caldwell County wi
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Regional facilities in this <strong>study</strong> will be developed to meet the approximateadditional need of 8,500 ac-ft. Facilities <strong>and</strong> transmission lines will be sized toprovide the determined need.12.3 Conceptual PlanningIn the evaluation of the population projections it was stated earlier that most of thedevelopment <strong>and</strong> growth is expected to occur to the north <strong>and</strong> west between the I-35 <strong>and</strong> SH 130 Highways. Planning for Caldwell County will develop with theunderst<strong>and</strong>ing that growth will begin from the north <strong>and</strong> west <strong>and</strong> then south toLuling. Water systems will be planned to accommodate the growth <strong>and</strong> allow forfurther <strong>regional</strong> expansion. This approach will also consider both the HCPUA<strong>and</strong> the GBRA Mid-Basin Project strategies.12.3.1 Source DevelopmentUtilizing the viable strategies of the HCPUA <strong>and</strong> the Mid-Basin Project, <strong>water</strong>sources from the Carrizo-Wilcox <strong>and</strong> Guadalupe River Basin will be developed.As shown in Exhibit 12-1, the initial delivery of the raw surface <strong>water</strong> will be toLuling <strong>and</strong> the delivery of ground<strong>water</strong> will be to Lockhart. Luling currentlyoperates a <strong>water</strong> treatment plant that is capable of diverting up to 4,422 ac-ft/ yr of<strong>water</strong> with a peak rate treatment capacity of 2.779 MGD. The plant delivers the<strong>water</strong> to the city of Luling <strong>and</strong> Lockhart. The transmission line that would route<strong>water</strong> to Luling for treatment is shown in a dashed blue line <strong>and</strong> the existing linethat delivers the <strong>water</strong> to Lockhart is solid red. The dashed red line indicates theground<strong>water</strong> route delivered to Lockhart. Another route to consider forground<strong>water</strong> is taken from a well field south of Caldwell County <strong>and</strong> delivered toLuling. Well fields that have been located for ground<strong>water</strong> development are notedas “Well Area” in Exhibit 12-2. Surface <strong>water</strong> diversions at the confluence of theSan Marcos <strong>and</strong> Guadalupe River are noted as “Surface Water Area” in theexhibit.Klotz Associates Project No. 0972.000.000January 201012-4Caldwell County Regional Water <strong>and</strong> Waste<strong>water</strong> Planning StudyFinal Report
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