BOARD00396

• Board Meeting Date: 3/24/2003
• Description: Flood Section - Corps of Engineers Programs and Status Update
• Board Meetings - Doc Type: Memo

II. OPERATION AND MAINTENANCE
RECREATION COST SHARING AT CHERRY CREEK, CHATFIELD, AND TRINIDAD
FY 03 (per lake) $650,000 - FY 04 (per lake) $400,000 - FY 13 Tancredo; Musgrave
o State of Colorado manages the recreation facilities at all three projects.
o Traditional Corps policy would preclude cost sharing the rehabilitation, repair, replacement,
or upgrades of facilities operated by a non-Federal entity on project lands without specific
Congressional direction. HQ granted CENWO/CESP A approval to cost share improvements
of recreation facilities, as authorized by Public Law 89-72.
o Project Cooperation Agreement between COE and Colorado State Parks to cost share renovation
of recreation facilities to be signed April 2003 (a signing ceremony to be scheduled). PCA in
Corps HQ for final HQ and ASA review. Signatory authority delegated to District Commanders.
o The 10-year plan is cost share is 50% Federal; 50% non-Federal; Estimated cost is $19 million at
Chatfield; $9 million at Cherry Creek; and $2.7 million at Trinidad.
o Annual appropriations above the amount appropriated for routine O&M activities are required
to execute the program.
o Proposed activities for FY 03 ($623,000 per lake, after savings and slippage) include repairing and
upgrading roads, parking lots, trails, restroom facilities, electrical hookups, campground
facilities, and sanitation.
o The State of Colorado requested a waiver of Corps policy to allow using cost-share funds to
rehabilitate shop structures at Trinidad and Chatfield Lakes and to construct a new administration
facility at Chatfield Lake. The waiver request was denied by HQUSACE.

Proiect Modifications for Improvement of Environment (Sec. 1135. PL 99-662. as amended)
Chatfield Downstream, South Platte - $55,000 -. $0 Tancredo
o CWCB has responsibility to maintain the flood control channel on the South Platte River
downstream of Chatfield Dam.
o The current Operation and Maintenance Manual prohibits the establishment of trees and shrubs
within the conveyance channel and control structures. The proposal would revise the O&M
manual to allow vegetation to remain in the channel to benefit fish and wildlife.
o NWD approved the Project Restoration Plan Dec 2002. ill Jan 2003, NWO received HQ
approval and funding to initiate PDA. However, before proceeding with the
feasibility study, NWO is to complete hydrologic and hydraulic analyses to determine the
capacity of the floodway to carry design flows and the current level of flood protection afforded
by the existing flood control project. Upon completion, NWO to recommend proceeding with
or terminating the study.
o illitiate Planning & Design Analysis in FY 03; complete PDA in FY 04.
o Potential to add $100,000 to complete the PDA and revise the O&M Manual, pending the
outcome of the hydrology and hydraulics study.

Cherry Creek Reservoir Wetlands - $0 -- $0 - Complete Preliminary Restoration Plan FY 03
o Preliminary Restoration Plan contracted to Icon Engineering for a proposed
constructed wetland for sediment! nutrient detention.
o Submit PRP to NWD for approval Apr 2003.
o Cherry Creek Basin Water Quality Authority, sponsor, desires to accelerate the project
Schedule to implement this year.
o The sponsor will most likely proceed without Corps involvement.

Tancredo,
Beauprez; DeGette

DAM SAFETY
Cherry Creek Dam Safety study - $0 -- $0 - study on hold Tancredo; Hefley
o In 1999, Congress directed the Corps to stop work on the study, pending the results
of an independent Probable Maximum Precipitation (PMP) analysis, being conducted
by the Colorado Water Conservation Board.

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