C150187 Feasibility Study

• Contract/PO #: C150187
• Contractor Name: Young Creek Reservoir Company
• Contract Type: Loan
• Water District: 40
• County: Delta
• Loan Projects - Doc Type: Feasibility Study

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9I\C.

SMITH WILLIAMS CONSULTANTS, INC.

Feasibility Study
Young Creek Reservoir Company
Young Creek Reservoir 1-2 Rehabilitation

Introduction (Need for the Project)

The Young Creek Reservoir Company, located in Delta County, Colorado, operates the Young Creek
Reservoir 1-2 for the benefit of shareholders by providing direct flow irrigation water to its users. The
reservoir designated as Young Creek Reservoir 1-2 is one in an array of two storage facilities used for
residual to irrigate 400 acres of service area. The reservoir has experienced a number of sinkholes within
the reservoir basin to route its 106 years of operation. Based on the level of seepage from the facility and
the presence of "sink holes" within the basin, action is deemed necessary to reduce the risk of future loss
of functionality of the impoundment. The second reservoir owned and operated by the Young Creek
Reservoir Company is Young Creek Reservoir NO.3.

In 2001, Knight Piesold and Co. completed a limited geotechnical investigation of the dam and placed
paired piezometers within the structure to allow phreatic surface level monitoring and determination of
hydrostatic pressure at the interface between the Dam structure and slide rock known to exist between
elevations 84 ft. and 102 ft.

After numerous discussions and meetings with the state dam safety engineer, lining of the reservoir along
the left abutment of the dam and the area immediately upstream of the dam on the left (southeast) side of
the reservoir has been deemed a viable interim solution to address sinkhole proliferation in this area.
This construction will allow the Young Creek Reservoir Company fill the facility without restriction with the
caveat that continued monitoring of the embankment piezometers occur. It is Young Creek Reservoir
Company's desire therefore to implement the rehabilitation construction to minimize the potential for
restrictions on the reservoir volume. They would like to complete this construction by the middle of
October 2004.

Project Sponsor

The Young Creek Reservoir Company is a Colorado Nonprofit Corporation registered with the state.
There are 34 shareholders and 60 shares of stock in the Young Creek Reservoirs 1-2 and 3. The Young
Creek Reservoir Company has the power to set annual assessments to be paid by the shareholders and
the power to cut off delivery to shareholders that fail to pay their assessments. The Young Creek
Reservoir Company Articles of Incorporation and By-laws are included in Appendix A.

Project Service Area and Facilities

The Young Creek Reservoir Company provides irrigation water to a 400-acre service area in Delta
County, Colorado. The two reservoirs owned by the Young Creek Reservoir Company include Young
Creek Reservoir 1-2 and Young Creek Reservoir 3. The service area extends to the south-southeast of
the reservoirs approximately 18 miles along Young Creek, the Big Ditch and Surface Creek, which runs
through the town of Cedaredge, Colorado. Irrigated acreage within the service area is primarily used to
grow fruit and hay as well as limited livestock watering. Fruit grown in the area is sold on the open market

Young Creek Reservoir 1-2
Reservoir Rehabilitation Feasibility Study
July 2004

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