FLOOD04092

• County: Delta
• Community: Delta
• Basin: Gunnison
• Title: Pre-Disaster Flood Hazard Mitigation Plan
• Date: 2/1/2002
• Prepared For: Delta
• Prepared By: CWCB
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

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Nine (9) Businesses are injeporty from flooding although some are out of the 100
year flood-plain. These include the offices for the mobile home parks, industrial
users like the Delta saw mill and the Delta Sand and Gravel concrete plant, and retail
businesses like Gibsons and Delta hnpliment.

There are also a number of vacant or agricultural use properties as well as many
public trails, park amenities and the City Living History Museum.

Some of these are properties at risk right on the edge of the floodplain. These
include the two RV/mobile home parks right on the river at the Hwy 50 bridge.
These properties have flooded in the past. Both have been raised to some extent to
take them out of the 100 year floodplain. We also have some prime commercial
properties close to the river which would be affected in floods greater than the 100
year levels.

A count of the buildinl!s affected bv f/oodinl! is essential. Windshield surveys or aerial
photos can be used to accomplish this task. Any flood damage data for buildings which is
available from previous flood events will be helpful to assist in project prioritization.

b. Critical Facilities:

One critical facility at risk in a large flood would be the Hwy 50 bridge. It is
the only bridge across the Gunnison for miles. In the past we have had large cottonwoods
stuck under the bridge. Should the bridge plug and then fail we would have difficulty in
providing emergency fire, police and medical services to the area North of the river.

Loss of the bridge would also mean loss of our ability to provide domestic water to the area
north of the bridge. This would leave thousands of people without water and with limited
fire protection.

Another critical facility is our waste water treatment plant. In 1984, the plant was
surrounded by water and portions of the delivery pipe to the plant were damaged. We
continue to try to improve flood protection to keep the plant operating during floods. This
plant serves the entire Delta area. Its loss would mean the loss of sanitary facilities for 8 to
9 thousand people.

Our other emergency services would only be affected by a massive flood such as a dam
break.

c. Natural Areas:

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The City of Delta has purchased an old industrial site and turned it into an
award winning park and natural area. We have generated a noted warm water fishery, a
water fowl area and manmade wetlands. There is threat to these facilities in massive floods.