Memorandum Director's Report Attachment 03/07/2000

• Board Meeting Date: 3/7/2000
• Description: Director's Report Attachment March 20-21, 2000 Board Meeting Water Supply Planning and Finance Section Design and Construction Status Report
• Board Meetings - Doc Type: Memo

This project is the rehabilitation of Foothills Reservoir dam, located west of Longmont in
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Boulder County. The dam has an inadequate spillway and severe seepage through the embankment
and has had a storage restriction placed on it by the State Engineer. The Highland Ditch Company
has contracted with Smith Geotechnical Engineering Consultants of Fort Collins to analyze design
alternatives and complete construction plans and specifications. Construction is scheduled to
commence in fall of 2000 or spring of 2001.
Riverside Reservoir and Land Company—Riverside Reservoir Spillway Rehabilitation
Authorization: SB 98-1189 County: Weld—NW of Wiggins
Water Source: South Platte River Project Yield: 200 ac.ft.
Terms of Loan: $450,000 @ 3.75%for 20 yrs. Project Type: Spillway Rehabilitation
This project is the construction of an emergency spillway on the Riverside Reservoir Dam,
located 11 miles northwest of Wiggins in Weld County. The State Engineer has placed a storage
restriction on the reservoir until an emergency spillway is completed. The Riverside Reservoir and
Land Company contracted with W.W. Wheeler and Associates of Denver to prepare construction
plans and specifications. The State Engineer's office and the Riverside Reservoir and Land
Company are currently evaluating alternate spillway sizes. Construction of the project is currently
on-hold,pending resolution of the spillway size and downstream property issues.
San Luis Valley Canal Company—Diversion Structure Rehabilitation
Authorization: SB 97-008 County: Rio Grande—E of Monte Vista
Water Source: Rio Grande River Project Yield: 25,000 ac.ft.
Terms of Loan: $188,000 @ 3.75% for 30 years Project Type: Diversion Structure Rehab.
This project is the rehabilitation of the San Luis Valley Canal Company's Rio Grande River
diversion structure. The project is located in Rio Grande County, 3 miles east of Monte Vista. The
Alamosa office of the Natural Resource Conservation Service has prepared the design plans with
the CWCB staff preparing the construction contract documents. Project construction is on-hold,
pending final approval from the San Luis Valley Company Board to proceed ahead with the
project.
Boulder&Lefthand Irrigation Company—Twin Lakes Outlet Improvements
Authorization: 1998 Small Project Loan Account County: Boulder—NE of Boulder
Water Source: Boulder Creek Project Yield: 218 ac.ft.
Terms of Loan: $100,000 @ 3.75%for 15 years Project Type: Dam Outlet Improvements
This project is the reconstruction of the Boulder&Lefthand Irrigation Company reservoir's
(Twin Lakes) outlet and inlet structures and the construction of a new emergency spillway. Recent
State Engineer Office inspections indicate that the outlet conduit has rusted through and is
functionally obsolete. Rocky Mountain Consultants of Longmont are currently preparing the final
• design plans and specifications,with construction scheduled for the Fall of 2000.