FLOOD08409

• Designation Number: 522
• County: Grand
• Community: Grand Lake
• Basin: Colorado Mainstem
• Title: Flood Insurance Rate Map - Floodplain Information Report - Grand Lake, CO, Grand County
• Date: 1/1/1986
• Designation Date: 7/1/2000
• Floodplain - Doc Type: Correspondence

WHEREAS, Sections 31-23-301 and 30-28-111, Colorado Revised Statutes, provide that
legislative bodies of local jurisdictions may provide zoning regulations for land uses on or along any
storm or floodwater runoff channel or basin only after designation and approval by the Colorado Water
Conservation Board; and

WHEREAS, Section 37-60-106(1)(c), Colorado Revised Statutes, directs the Colorado Water
Conservation Board to designate and approve storm or floodwater runoff channels or basins and to
make such designations available to legislative bOdies oflocal jurisdictions; and

COMPLIANCE WITH CWCB TECHNICAL STANDARDS

WHEREAS, the approximate floodplain information on said map dated January 1, 1986,
contained within said new report dated July 2000, meets all of the requirements listed under the Board's
"Rules and Regulations for the Designation and A.pproval of Floodplains and of Storm or Floodwater
Runoff Channels in Colorado" (2 CCR 408-1); and

WHEREAS, 100-year peak discharges were computed using the CWCB's "Guidelines for
Determining lOO-year Flood Flows for Approximate Floodplains in Colorado"; and

WHEREAS, the regulation of floodplaim; by the Town of Grand Lake should take place on a
case-by-case basis following the procedures developed by the Colorado Water Conservation Board
staff, as outlined in Table 5 and based on the defiIJitions included in Table 6:

TABLE 5
CWCB Procedures for Rel!ulatiol! Approximate Zone A Floodplains

I Type of Development
I Proposal in Community
I
! Limited develo ment
Limited develo ment
Si 'ficant develo ment
~ficant development

I Hydrologic
I Requirements
for Pro onent
A roximate
Detailed
Detailed
Detailed

Hydraulic
Requirements
for Pro onent
A roximate
A roximate
Detailed
DetaileL-J

i Are Regional Regression
I Equations Applicable to
the Stream oflnterest?
I l'es
No
l'es
No

2

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