BOARD02518

• Board Meeting Date: 11/19/2001
• Description: CF Section - Referred Non-Reimbursable Investments Floodplain Mapping Program
• Board Meetings - Doc Type: Memo

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Water Supply Finance and Construction Program - Project Data

Grantee: Colorado Water Conservation Board County: Statewide
Project Name: Colorado Floodplain Mapping Program
Project Type: Flood Protection Program Water Source: N/A
Drainage Basin: Potentially any river basin in Colorado
Total Project Cost: $200,000 Funding Source: CWCB Const. Fund
Type of Grantee: State Government Median Household income: N/ A
CWCB Non-Reimbursable Inv.: $100,000 Interest Rate: N/A Term: N/A

SUMMARY
The CWCB has an active floodplain identification program for the state's 16,000 miles of floodplains. The
state, in cooperation with many partners, has studied over 8,000 miles of stream reaches covering 90 percent of
the developed floodplain areas in Colorado, The factors which might necessitate new mapping studies or revised
studies include:
I, "natural aging" of floodplain maps prepared many years ago,
2. changes to the floodplain resulting from large floods,
3, changes to the floodplain resulting from human activities in the floodplain,
4, changes in engineering and mapping techniques and/or new data, and
5, growth into floodplains previously unstudied,
Local governments are usually able and wiIling to provide cost-share funding for such, but they are not able to
carry the entire burden of the study cost. Up-to-date and accurate floodplain mapping is the cornerstone of all
floodplain management activities in nearly every Colorado community, Floodplain mapping is a critical tool for
land use decision-making and regulation, flood insurance determinations, public safety and hazard awareness,
flood response, and flood hazard mitigation. The proposed funding from this grant request would allow the
CWCB to partner with local governments (and in some cases with the Corps of Engineers and other federal
agencies) to provide much-needed floodplain mapping revisions and updates for the CWCB's top priority
stream reaches in the state,

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Project Impact Area

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