FLOOD11551

• Designation Number: 595
• County: El Paso
• Community: Colorado Springs
• Stream Name: North Pine Creek, Pine Creek
• Basin: Arkansas
• Title: LOMR - Affected Panel 507F, 509F, 528F, 530F - Case No. 05-08-0575P
• Date: 8/23/2006
• Prepared For: Colorado Springs
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE CITY
OF COLORADO SPRINGS, EL PASO COUNTY, COLORADO, UNDER THE NATIONAL FLOOD
INSURANCE PROGRAM

On March 17, 1997, the Department of Homeland Security's Federal Emergency Management Agency
identified Special Flood Hazard Areas (SFHAs) in the City of Colorado Springs, El Paso County,
Colorado, through issuance of a Flood Insurance Rate Map (FIRM). The Mitigation Division has
determined that modification of the elevations of the flood having a I-percent chance of being equaled or
exceeded in any given year (base flood) for certain locations in this community is appropriate. The
modified Base Flood Elevations (BFEs) revise the FIRM for the community.

The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public
Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended
(Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C.
4001-4128, and 44 CFR Part 65.

A hydraulic analysis was performed to incorporate a new hydrologic analysis; the effects of a new storm
drain and detention basin along North Pine Creek from approximately 1,800 feet upstream to
approximately 9,000 feet upstream of the outfall of an existing storm drain system; and the effects of new
storm drains and detention basins along Pine Creek from approximately 950 feet upstream to
approximately 10,000 feet upstream of Briargate Parkway. This has resulted in a revised delineation of
the regulatory floodways, increases and decreases in SFHA width, and increased and decreased BFEs for
both North Pine Creek and Pine Creek. The table below indicates existing and modified BFEs for
selected locations along the affected lengths of the flooding source(s) cited above.

Location

Existing BFE
(feet) *

Modified BFE
(feet) *

North Pine Creek:
Approximately 1,880 feet upstream of outfall of
storm drain system
Approximately 8,960 feet upstream of outfall of
storm drain system

6,800 6,795
7,004 7,006
6,788 6,786
6,956 None
None 6,877
None 7,011

Pine Creek:
Approximately 950 feet upstream of Briargate Parkway
Approximately 7,800 feet upstream of Briargate Parkway

Pine Creek Detention Basins:
Approximately 4,100 feet upstream of Briargate Parkway
Approximately 10,000 feet upstream of Briargate Parkway

*National Geodetic Vertical Datum, rounded to nearest whole foot

Under the above-mentioned Acts of 1968 and 1973, the Mitigation Division must develop criteria for
floodplain management. To participate in the National Flood Insurance Program (NFIP), the community
must use the modified BFEs to administer the floodplain management measures of the NFIP. These
modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new
buildings and their contents and for the second layer of insurance on existing buildings and contents.