5.3.7 Dimmit County Water Supply Plan
Table 5.3.7-1 lists each water user group in Dimmit County and their corresponding surplus or shortage in years 2030 and 2050. For each water user group with a projected shortage, or need, a water supply plan has been developed and is presented in the following subsections.
Table 5.3.7-1.
Dimmit County Surplus/Shortage
|
Water
User Group |
Surplus/Shortage1 |
Comment |
||
|
2030 |
2050 |
|||
|
City of Asherton |
70 |
27 |
Projected surplus |
|
|
City of Big Wells |
43 |
40 |
Projected surplus |
|
|
City of Carrizo Springs |
-1,054 |
-1,959 |
Projected shortage – see plan below |
|
|
Rural Area Residential and Commercial |
49 |
0 |
Projected surplus |
|
|
Industrial |
2 |
0 |
Projected surplus |
|
|
Steam-Electric Power |
0 |
0 |
No projected demand |
|
|
Mining |
0 |
0 |
No projected surplus/shortage |
|
|
Irrigation |
0 |
0 |
No projected surplus/shortage |
|
|
Livestock |
0 |
0 |
No projected surplus/shortage |
|
|
1 From Table 4-7,
Section 4.1 – Water Needs Projections by Water User Group. |
|
||||
5.3.7.1 City of Asherton
The City of Asherton is projected to have adequate water supplies available from the Carrizo Aquifer to meet the city’s projected demand during the planning period.
5.3.7.2 City of Big Wells
The City of Big Wells is projected to have adequate water supplies available from the Carrizo Aquifer to meet the city’s projected demand during the planning period.
Working within the planning criteria established by the SCTRWPG and the TWDB, it is recommended that the City of Big Wells implement the following water supply plan (Table 5.3.7-2).
§ Municipal demand reduction (conservation) to be implemented in 2000. This project can provide an additional 15 acft/yr beginning in year 2000, decreasing to 8 acft/yr of supply in 2050 (See Section 6, Supplement 2 and Volume III, Section 1.1).
Table 5.3.7-2.
Recommended Water Supply Plan for the City of Big Wells
|
|
2000
(acft/yr) |
2010
(acft/yr) |
2020
(acft/yr) |
2030 |
2040
|
2050 |
|
Projected Need (Shortage) |
0 |
0 |
0 |
0 |
0 |
0 |
|
Recommended Plan |
|
|
|
|
|
|
|
Demand Reduction (Conservation) (L-10 Mun) |
15 |
15 |
15 |
8 |
8 |
8 |
|
Total New Supply |
15 |
15 |
15 |
8 |
8 |
8 |
The costs of the recommended plan for the City of Big Wells are shown in Table 5.3.7-3.
Table 5.3.7-3.
Recommended Plan Costs by Decade for the City of Big Wells
|
Plan
Element |
2000 |
2010 |
2020 |
2030 |
2040 |
2050 |
|
Demand Reduction
(Conservation) (L-10 Mun) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$4,038 |
$3,861 |
$3,722 |
$826 |
$735 |
$652 |
|
Unit Cost ($/acft) |
$269 |
$257 |
$248 |
$103 |
$92 |
$82 |
5.3.7.3 City of Carrizo Springs
The City of Carrizo Springs’ current water supply is obtained from the Carrizo Aquifer. The City of Carrizo Springs is projected to need additional water supplies beginning in the year 2000. The following options were considered to meet the city’s projected need:
§ Demand Reduction (Conservation) (L-10 Mun.)
§ Carrizo Aquifer – Local Supply (SCTN-2a)
Working within the planning criteria established by the SCTRWPG and the TWDB, it is recommended that the City of Carrizo Springs implement the following water supply plan to meet the projected need for the city (Table 5.3.7-4).
§ Municipal demand reduction (conservation) to be implemented in 2000. This project can provide an additional 116 acft/yr of supply in 2000, increasing to 125 acft/yr of additional supply in 2050. (See Section 6, Supplement 2 and Volume III, Section 1.1).
§ Carrizo Aquifer – Local Supply (SCTN-2a) to be implemented in 2000. This project can provide additional supplies of 500 acft/yr in 2000, 1,000 acft/yr in 2010 and 2020, 2,500 acft/yr in 2030, 3,000 acft/yr in 2040, and 3,500 acft/yr in 2050.
Table 5.3.7-4.
Recommended Water Supply Plan for the City of Carrizo Springs
|
|
2000
(acft/yr) |
2010
(acft/yr) |
2020
(acft/yr) |
2030
(acft/yr) |
2040
(acft/yr) |
2050
(acft/yr) |
|
Projected Need (Shortage) |
138 |
405 |
649 |
1,054 |
1,479 |
1,959 |
|
Recommended Plan |
|
|
|
|
|
|
|
Demand Reduction (Conservation) (L-10 Mun.) |
116 |
128 |
141 |
97 |
110 |
125 |
|
Carrizo Aquifer – Local Supply (SCTN-2a) |
500 |
1,000 |
1,000 |
2,500 |
3,000 |
3,500 |
|
Total New Supply |
616 |
1,128 |
1,141 |
2,597 |
3,110 |
3,625 |
The costs of the recommended plan to meet the City of Carrizo Springs’ projected need are shown in Table 5.3.7-5.
Table 5.3.7-5.
Recommended Plan Costs by Decade for the City of Carrizo Springs
|
Plan
Element |
2000 |
2010 |
2020 |
2030 |
2040 |
2050 |
|
Demand Reduction
(Conservation) (L-10 Mun.) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$30,267 |
$30,444 |
$30,583 |
$10,014 |
$10,105 |
$10,188 |
|
Unit Cost ($/acft) |
$261 |
$238 |
$217 |
$103 |
$92 |
$82 |
|
Carrizo Aquifer – Local
Supply (SCTN-2a) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$193,500 |
$387,000 |
$387,000 |
$812,500 |
$851,000 |
$1,044,500 |
|
Unit Cost ($/acft) |
$387 |
$387 |
$387 |
$325 |
$284 |
$298 |
5.3.7.4 Rural Area Residential and Commercial
The rural area of Dimmit County is projected to have adequate water supplies available from the Carrizo Aquifer to meet the water user group’s projected demands during the planning period.
5.3.7.5 Industrial
Industrial is projected to have adequate water supplies available from the Carrizo Aquifer to meet the water user group’s projected demands during the planning period.
5.3.7.6 Steam-Electric Power
There is no projected steam-electric power water demand in Dimmit County, therefore no water management strategies are recommended for this water user group.
5.3.7.7 Mining
Mining is projected to have adequate water supplies available from the Carrizo Aquifer and run-of-river rights to meet the water user group’s projected demand during the planning period.
5.3.7.8 Irrigation
Irrigation is projected to have adequate water supplies available from the Carrizo Aquifer and run-of-river rights to meet the water user group’s projected demand during the palnning period.
5.3.7.9 Livestock
Livestock is projected to have adequate water supplies available from local sources to meet the water user group’s projected demand during the planning period.