WSP03473

• File Number: 5000.300
• Description: Flood Protection Section - Mudflow Mitigation Plan - 1987
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/3000
• Author: Garfield County
• Title: Debris Flow Annex - Garfield County Emergency Operations Plan - Date Unknown
• Water Supply Pro - Doc Type: Report/Study

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which prioritizes needs, makes recommendations and schedules
implementation of available alternatives,

(b) adoption of a Geologic
Ordinance No. 26, 1981)
identlfied hazard zones,

Hazards Ordinance
that restricts

(Glenwood Springs
development in

(c) enforcement
extension of

o E Cny Blue Line
City utllities,

restrictiollS, which limit the

(d) purchase of easements/right of way to both restrict growth and
permit passage of debris flows through suspect areas,

(e) the commlssion of a 1983 engineering study and control plan
that reco~mends structural mitigation strategies,

(f) the individual floodproofing efforts of affected property
Q1..Jners.

2, Structural

(a) constructlon of berms/deflectors and maintenance of structural
features by the City and prlvate individuals,

(b) construction of enlarged, concrete culverts capable of passing
debris [lo"s,

(c)

redesign and construction of
crown to allow carrying of
(and to permit easy cleaning

21st Street with an inverted
debris flo~s away from structures
of debris by street crews).

C. Recommended Mitigation Activities (recommended for adoption or for
request for State government assistance):

I, Non-Structural:

(a) strict enforcement of the City's Geologic [jazards Ordinance,
builrling codes, developmellt reviews and otller land use
measures to restrict development in hazardous areas,

( b)

review of existing zOll~ng
respect to upholding City's
public health and safety,

and land LIse restrictions with
responsibilIty for promoting

(c) restrict develoi)ment or recollstruction of disaster dalnaged
properties in developed areas following future debris flows.
1fl undeveloped areas of the CIty and county, reclassification
of debris fans to l1no-bu]ld zonesll is most cost-effective
mitlgat~on solution,