Animas-La Plata Project Water Supply Demand Study

Section 3 Animas - La Plata Water Supply and Demand Study
Table
3-1. Summary of Population
Percent
Annual
County
2000 2010 2020 2030 Change
Growth
2000 -2030
Rate
Archuleta
10,028
14,449
19,813
27,048
169.7%
3.36%
La Plata
44 ,566
1 54,881
68,385
1 80,598
1 80.9%
1 1.99%
Most demand in La Plata and Archuleta Counties is existing agriculture and municipal and industrial. There is
a limited amount of large self - supplied industrial users (SSI) typically for snowmaking. It is important to note
that La Plata County demand includes SSI user demands of approximately 400 AF in 2000. That SSI demand
is anticipated to increase to approximately 650 AF by 2030.
SWSI concludes that the entire DSJSM Basin will have a shortfall supply of roughly 4,900 AF to meet 2030
demands. For La Plata and Archuleta counties shortfalls in supply versus 2030 demand are approximately
1,000 and 400 AF /YR respectively for M&I and SSI. SWSI found that water providers may have excess
supply by implementing water conservation methods.
In Archuleta County, the San Juan Water Conservancy District and Pagosa Area Water and Sanitation
District have future water supplies (for 2030) dependent on the construction of the Dry Gulch project. The
water supplies are also available through the A -LP Project, but water treatment and transportation are limiting
factors in transporting water to the location of the demands.
3.1.2 IBCC /Southwest Roundtable Data
The Interbasin Compact Process was created in 2005 to promote collaboration between the State's eight river
basins and created the Interbasin Compact Committee (IBCC) and nine Basin Roundtables, one for each
river basin and one for the Denver metropolitan area. The IBCC is composed of 27 members composed of
gubernatorial and legislative appointees and two members of each roundtable. The roundtables were created
to further study water issues such as sources develop a basinwide consumptive and nonconsumptive water
supply needs assessment conduct an analysis of available unappropriated waters within the basin and propose
projects within each basin. Roundtables are composed of various water interests including water providers,
conservancy districts, environmental interests and local governments. In addition to signing the Interbasin
Compact Process, was created to guide discussions between the individual basins.
The basin roundtable covering the study area is the Southwest Basin, which covers the Dolores /San
Juan/San Miguel River Basin. The Southwest Basin Roundtable report was completed in June 2006. Data
for the Southwest Roundtable came primarily from the SWSI report and focused on the basinwide scale and
did not provide information and data in addition to that which was available in the SWSI report.
3.1.3 County Data
3.1.3.1 Archuleta County
Water resource plans were not available from the county, although population projections were available
from planning documents related to parks and recreation plans. Table 3 -2 summarizes population
projections form the Archuleta County parks and recreation plan.
3.2
PAData1GEN1CWCB1138372 - Animas -La Plata Demand Study \DeliverableslReportslFinallALP Cost Demand Study Final Report -docx