FLOOD10800

• Designation Number: 592
• County: Routt
• Community: Routt County and Incorporated Areas
• Title: FIS - Routt County and Incorporated Areas
• Date: 2/4/2005
• Prepared For: Routt County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

Two separate flow splits from the main Yampa River floodplain occur just upstream of
SH 131, south of the City of Steamboat Springs. The Yampa River Bypass, which
diverts flows from the main channel of the Yampa River approximately 2,700 feet
upstream of SH 131, was studied in detail to the point where it rejoins the Yampa River
approximately 0.8 mile downstream of the SH 131 bridge over the Yampa River
Bypass, a distance of approximately 2.1 miles. The split flow at S8 131 diverts from
the main channel of the Yampa River immediately upstream of SH 131. The split flow
was studied in detail to the point where it rejoins the Yampa River approximately
500 feet downstream of the intersection of SH 131 and CR 20, a distance of
approximately 0.5 mile.

The Elk River was studied from CR 129 downstream to the confluence with the
Yampa River, a total distance of approximately 8.6 stream miles.

Walton Creek was studied from SH 131 through the southern corporate limit of
Steamboat Springs, downstream to the confluence with the Yampa River, a total
distance of 2.5 miles. The creek traverses several areas that have been developed in
recent years, with additional development planned for the future. Some of this
development near, US 40, is known to be in the currently effective loo-year floodplain.

Burgess Creek was studied from the eastern corporate limit of Steamboat Springs
downstream to its confluence with Walton Creek, a total distance of 2.3 miles. Burgess
Creek flows through a dense development of business and condominium facilities that
serve the Steamboat Springs ski area. Some of this developed area encroaches on the
creek.

For Burgess Creek, a report entitled "Creek Side at Torian Plum Burgess Creek,
Steamboat Springs Colorado" (Reference 6), submitted in support of the October 29
LOMR, revised the reach studied by TC&B from the upstream face of the culvert under
the Steamboat ski area to the downstream face of the culvert (Ski Times Square). The
final model was completed by FEMA in October 2003.

2.2 Community Description

Town of Hayden

The Town of Hayden, located in western Routt County, lies approximately 25 miles
west of the City of Steamboat Springs, which is the county seat; 17 miles east of the
City of Craig; 130 miles northwest of and across the Continental Divide from Denver.
Hayden was incorporated in 1906. The estimated 2000 population of the Town of
Hayden was 1,634 (Reference 7). The economy of the area is very diversified,
including agriculture, coal mining, and industry.

The Yampa River, which flows parallel to the northern corporate limits, originates in
the Park Range to the east and flows approximately 75 miles before reaching the
Hayden area. The floodplain of the Yampa River at Hayden varies in width but
averages approximately 0.75 mile. A small tributary, Dry Creek, enters the Yampa
River from the south, through the western portion of the town. Several small
intermittent tributaries to Dry Creek flow through the southern corporate limits.

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