5.3.18 Uvalde County Water Supply Plan
Table 5.3.18-1 lists each water user group in Uvalde 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 5.3.18-1.
Uvalde County Surplus/Shortage
|
Water
User Group |
Surplus/Shortage1 |
Comment |
|
|
2030 |
2050 |
||
|
City of Sabinal |
-369 |
-476 |
Projected shortage – see plan below |
|
City of Uvalde |
-3,872 |
-5,133 |
Projected shortage – see plan below |
|
Rural Area Residential and Commercial |
250 |
366 |
Projected surplus |
|
Industrial |
410 |
293 |
Projected surplus |
|
Steam-Electric Power |
0 |
0 |
No projected demand |
|
Mining |
0 |
0 |
No projected surplus/shortage |
|
Irrigation |
-36,274 |
-27,383 |
Projected shortage – see plan below |
|
Livestock |
0 |
0 |
No projected surplus/shortage |
|
1 From Table 4-18,
Section 4.1 – Water Needs Projections by Water User Group. |
|||
5.3.18.1 City of Sabinal
The City of Sabinal’s current water supply is obtained from the Edwards Aquifer. The City of Sabinal 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.)
§ Edwards Irrigation Transfers (L-15)
Working within the planning criteria established by the SCTRWPG and the TWDB, it is recommended that the City of Sabinal implement the following water supply plan to meet the projected need for the city (Table 5.3.18-2).
§ Municipal demand reduction (conservation) to be implemented in 2000. This project can provide an additional 31 acft/yr of supply in 2000, decreasing to 26 acft/yr of additional supply in 2050. (See Section 6, Supplement 2 and Volume III, Section 1.1).
§ Edwards Irrigation Transfers (L-15) to be implemented in 2000. This project can provide an additional 500 acft/yr beginning in the year 2000 through 2050.
Table 5.3.18-2.
Recommended Water Supply Plan for the City of Sabinal
|
|
2000
(acft/yr) |
2010
(acft/yr) |
2020
(acft/yr) |
2030
(acft/yr) |
2040
(acft/yr) |
2050
(acft/yr) |
|
Projected Need (Shortage) |
247 |
283 |
310 |
369 |
420 |
476 |
|
Recommended Plan |
|
|
|
|
|
|
|
Demand Reduction (Conservation) (L-10 Mun.) |
31 |
34 |
36 |
22 |
24 |
26 |
|
Edwards Irrigation Transfers (L-15) |
500 |
500 |
500 |
500 |
500 |
500 |
|
Total New Supply |
531 |
534 |
536 |
522 |
524 |
526 |
The costs of the recommended plan to meet the City of Sabinal’s projected need are shown in Table 5.3.18-3.
Table 5.3.18-3.
Recommended Plan Costs by Decade for the City of Sabinal
|
Plan
Element |
2000 |
2010 |
2020 |
2030 |
2040 |
2050 |
|
Demand Reduction
(Conservation) (L-10 Mun.) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$8,364 |
$8,392 |
$8,342 |
$2,287 |
$2,272 |
$2,244 |
|
Unit Cost ($/acft) |
$270 |
$247 |
$232 |
$104 |
$95 |
$86 |
|
Edwards Irrigation
Transfers (L-15) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$47,060 |
$47,060 |
$47,060 |
$47,060 |
$47,060 |
$47,060 |
|
Unit Cost ($/acft) |
$80 |
$80 |
$80 |
$80 |
$80 |
$80 |
5.3.18.2 City of Uvalde
The City of Uvalde’s current water supply is obtained from the Edwards Aquifer. The City of Uvalde is projected to need additional water supplies beginning in the year 2000. The following options were considered to meet the city’s projected need:
§ Demand Reduction (Conservation) (L-10 Mun.)
§ Edwards Irrigation Transfers (L-15)
Working within the planning criteria established by the SCTRWPG and the TWDB, it is recommended that the City of Uvalde implement the following water supply plan to meet the projected need for the city (Table 5.3.18-4).
§ Municipal demand reduction (conservation) to be implemented in 2000. This project can provide an additional 286 acft/yr of supply in 2000, declining to 257 acft/yr of additional supply in 2050. (See Section 6, Supplement 2 and Volume III, Section 1.1).
§ Edwards Irrigation Transfers (L-15) to be implemented in 2000. This project can provide additional supplies of 2,500 acft/yr 2000, 3,500 acft/yr in 2010 and 2020, 4,500 acft/yr in 2030 and 2040, and 5,500 acft/yr in 2050.
Table 5.3.18-4.
Recommended Water Supply Plan for the City of Uvalde
|
|
2000
(acft/yr) |
2010
(acft/yr) |
2020
(acft/yr) |
2030
(acft/yr) |
2040
(acft/yr) |
2050
(acft/yr) |
|
Projected Need (Shortage) |
2,435 |
2,883 |
3,183 |
3,872 |
4,460 |
5,133 |
|
Recommended Plan |
|
|
|
|
|
|
|
Demand Reduction (Conservation) (L-10 Mun.) |
286 |
312 |
335 |
213 |
234 |
257 |
|
Edwards Irrigation Transfers (L-15) |
2,500 |
3,500 |
3,500 |
4,500 |
4,500 |
5,000 |
|
Total New Supply |
2,786 |
3,812 |
3,835 |
4,713 |
4,734 |
5,257 |
The costs of the recommended plan to meet the City of Uvalde’s projected need are shown in Table 5.3.18-5.
Table 5.3.18-5.
Recommended Plan Costs by Decade for the City of Uvalde
|
Plan
Element |
2000 |
2010 |
2020 |
2030 |
2040 |
2050 |
|
Demand Reduction
(Conservation) (L-10 Mun.) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$76,596 |
$76,568 |
$76,618 |
$0 |
$0 |
$0 |
|
Unit Cost ($/acft) |
$268 |
$245 |
$229 |
$0 |
$0 |
$0 |
|
Edwards Irrigation
Transfers (L-15) |
|
|
|
|
|
|
|
Annual Cost ($/yr) |
$235,300 |
$329,420 |
$329,420 |
$423,540 |
$423,540 |
$470,600 |
|
Unit Cost ($/acft) |
$80 |
$80 |
$80 |
$80 |