FLOOD00742

• Designation Number: 356.03
• County: Prowers
• Community: Granada
• Stream Name: Arkansas River, Wolf Creek
• Title: Floodplain Information Report - Granada
• Date: 7/1/1994
• Designation Date: 7/1/1994
• Floodplain - Doc Type: Floodplain Report/Masterplan

EXECUTIVE SUMMARY

This Floodplain Information Report (Report) regarding the Town of Granada (Town),
Colorado, was prepared by Colorado Water Conservation Board (Board) stall' in support of
Floodplain Resolution Nwnber 94-356.03.

The Town of Granada occupies a position in the Wolf Creek and ,Arkansas River
floodplain on the south bank of the Arkansas River in southeastem Colorado. The Town has
suffered nwnerous floods from Wolf Creek. A particularly devastating flood on Wolf Creek
inundated Granada in June 1965. Following the 1965 flood the Town of Granada requested help
from the U.S. Army Corps of Engineers (Corps). Subsequent Corps investigations resulted in
a nwnber of studies, reports, and actions.

Two Special Flood Ha?.ard Information Reports prepared by the Corps in 1974 were the
focus of Colorado Water Conservation Board action designating and approving, on December 4,
1974, (Floodplain Resolution Index Nwnber 39) and on February 26, 1975, (Floodplain
Resolution Index Nwnber 40) 100-year floodelain areas along the Arkansas River and floodplain
areas along Wolf Creek in the vicinity of anJ induding the Town of Granada,

The U.S, Department of Housing and Urban Development (HUD) published on July 18,
1975, an approximate floodplain map (Flood Hazard Boundary Map) for the Town of Granada,
This map showed a major portion of the TovV11 as being in the 100-year floodplain and subject
to the risk of flooding.

Following the Corps investigations and studies, the Granada Flood Control Project
(Project) was constructed. Construction was completed May 20, 1980. The official completion
date was November 30, 1980 when seeding w<15 finished. The Project includes structures, levees,
and channel improvements.

The Federal Emergency Managemel1t Agency (FEMA) acknowledged the Project's
protection and took action, em:ctive Septeml?er 24, 1984, converting the Town to the Regular
Program of the National Flood Insurance proj5ram and finalizing the Flood Insurance Rate Map
for the Town,

This current Floodplain Informatiofl Report docwnents for the Colorado Watcr
Conservation Board, the modified 100-year floodplain reflecting the benefits of the Project flood
control structures, levees, and channel improvements near the Town.

Recommendations are made to designate and approve the floodplain information in this
Report and rescind portions of previous Board designations done prior to the Project