PROJ00505

• Contract/PO #: C153419
• Contractor Name: San Miguel Water Conservancy District
• Water District: 0
• County: San Miguel
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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TABLE 4.3 (b) - Average annual runoff volumes for drainages which feed the
Cone and Gurley water collection systems

*
Weighted Average Average
}1ean Unit Drainage Annual
Elevation Runoff Area Runoff
(feet) (AF) (sq. mi.) (AF)
Cone Res. Collection System 9,510 365 11. 69 4,267
Gurley Res. Collection System
-East Beaver Creek Forks 10,525 965 12.68 12,236
-Middle Beaver Creek Forks 10,120 660 2.76 1,822
-West Beaver Creek 10,400 860 8.41 7,233
-Goat Creek 10,155 680 5.30 3,604
-Non-channelled overland
flow 9,540 370 5.36 1,983
-TOTAL 34.51 26,880
*
Acre-feet per square mile

4.4 Ground Water Supply

The groundwater supply in the San Miguel Water Conservancy District was

not investigated or estimated for this study. It was not considered a feasible

component of supply for the proposed enlargement.

Groundwater is relied upon by some land owners in the area for springs

known as seep meadows. These provide a stock-watering source and some water to

lower fields. The source of these springs is presumed to be due in part to

subsurface irrigation return flow.

4.5 Water Rights

Lone Cone Reservoir is owned and operated by the Lone Cone Ditch and

Reservoir Company. It is located in the headwaters area of Naturita Creek. It

is operated every year in conjunction with the Lone Cone Ditch to serve

irrigated lands in the Norwood and Redvale area.

The reservoir was originally appropriated in 1902, with a capacity of 840

acre-feet. It has been enlarged to a capacity of 1,800 acre-feet since that

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