FLOOD05112

• Designation Number: 536
• County: Boulder
• Community: Boulder County and Incorporated Areas
• Basin: South Platte
• Title: Flood Insurance Study - Boulder County, CO and Incorporated Areas Volume I
• Date: 6/1/1995
• Designation Date: 11/1/2000
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

TABLB OF CONTENTS (Cont'd)
Volume 1 (Cont'd)
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FIGURBS
Figure 1 - Bear Creek at Upstream Face of Broadway Culvert l
Looking South, City of Boulder . . . . . . . . . . . . 15
Figure 2 - Bear Creek at Intersection of Table Mesa Drive and
Harvard Lane, Just Upstream of Broadway, City of
Boulder . . . . . . . . . .. . . . . . . . . . . . 15
Figure 3 - Fourmile Canyon Creek Upstream of 57th Street,
Looking North, City of Boulder . . . . . . . . . . . 16
Figure 4 - Fourmile Canyon Creek at North, Boulder Farmers
Ditch Flume, Looking Upstream, City of Boulder . . . . 16
Figure 5 - Historic Flooding, Flood of May 1969, Town of
JlImestown . . . . . . . . . . . . . . . . . . . . 18
Figure 6 - Historic Flooding, Flood of May 1969, Town of
JlImestown . . . . . . . . . ,. . . . . . . . . . . . . 18
Figure 7 - Historic Flooding, Flood of May 1969, Town of
JlImestown . . . . . . . . .. . . . . . . . . . . . . 19
Figure 8 - Historic Flooding, Flood of May 1969, Town of
JlImestown . . . . . . . . . . . . . .' . . . . . . 19
Figure 9 - View South from Colorado and Southern Railroad
Depot, St. Vrain Creek, June 1921 . . . . . . . . 22
Figure 10 - Loomiller Basin at 5th Avenue and Main Street,
Looking North, June 1921 . . . . . . . . . . . . . 22
Figure 11 - Looking Toward Roosevelt Park, Loomiller Basin,
June 1921 . . . . . . . . . . . . . . . . . . . . . 23
Figure 12 - View South Along Main Street, Loomiller Basin,
August 3, 1972 . . . . . . . . . . . . . . . . . . 23
Figure 13 - Mobile Home Park Threatened by,St. Vrain Creek,
MlIY 7, 1969 . . . . . . . . . . . . . . . . . . . . 24
Figure 14 - Lefthand Creek at South Pratt Parkway Bridge,
May 8, 1969 . . . . . . . . . . . . . . . . . . . 24
Figure 15 - Lefthand Creek at South Pratt Parkway Bridge,
May 8, 1969 . . . . . . . . . . . . . . . . . . 25
Figure 16 - Inundation of South Pratt Parkway Bridge by
Lefthand Creek, May 8, 1979 . . . . . . . . . . . . 25
Figure 17 - Historic Flooding, Town of Lyons . . . . . . . 28
Figure 18 - Historic Flooding, Town of Lyons . . . . . . 28
Figure 19 - Historic Flooding, Town of Lyons . . . . . . . . . . 29
Figure 20 - Historic Flooding, Town of Lyons . . . . . . . . 29
Figure 21 - Floodway Schematic . . . . . . . . . . . . . . . . . 70
TABLBS ,

Table 1 - Streams Studied by Detailed Methods . . . . . . . . . 7
Table 2 - Historic Flood Peak Discharges and Stages at
Lyons Gage, St. Vrain Creek . . . . 35 '.
. . . . . . . . .
Table 3 - Historic Flood Peak Discharges and Stages at
Neder1and (Recorded on Middle Boulder Creek) . . . . 36

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