FLOOD05467

• County: Adams
• Community: Thornton, Adams County
• Basin: South Platte
• Title: Flood Hazard Area Delineation
• Date: 10/1/1979
• Prepared For: Thornton, Adams County
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Fig-ure No

H
1-2

1-3
IH
II-2
II-3

II-4

lI-5
lI-6
II-7

II-8
II-9
lIH
III-2

III-3
III-4
III-5
III-6
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IV-2
IV-3
IV-4
IV-5
V-I
V-2
V-3

Note:

LIST OF FIGURES

Title

Recommended Plan - Direct Flow Area 0054
Preliminary Cross Section of Proposed Improvements on Holly Street and
Lower Pond
Preliminary Cross Section of Proposed Improvements at East 112th Avenue
Existing Drainage Basin Map
Historic Drainage Basin Map
Future Land Use Map

View from Riverdale Road Eastward to Reach 1 During Storm of May 2,
1979
Channel Along Fence in Reach 2 Looking Downstream
Riprap Spillway of Upper Medema Pond, Reach 3
View of Colorado Agricultural Canal Culvert beneath Holly Street Looking
South
Holly Street During Storm of May 2, 1979
Small Detention Area Behind 112th Avenue at Reach 4
Hyetograph of lOO-Year Storm
lOO-Year Hydrograph at Confluence with South Platte River
and at Riverdale Road
100-Year Hydrographs at Holly Street
100-Year Hydrographs at 112th Ave.
Peak Flood Discharges - DF A 0054-1
Peak Flood Discharges - DFA 0054-l Middle and Northern Branches
100-Year Flood Plain - DF A 0054
Flood Damage - Probability Curve Reach 1
Flood Damage - Probability Curve Reach 2
Flood Damage - Probability Curve Reach 3
Flood Damage - Probability Curve Reach 4
Alternative Matrix
Flood Warning, Evaluation and Evacuation Strategy
Peak Flood Discharges W /Detention Improvements

All figures appear at the end of the respective sections