FLOOD03719

• County: Adams
• Community: Thornton
• Stream Name: Big Dry Creek
• Basin: South Platte
• Title: Floodplain Information Report
• Date: 4/15/1988
• Prepared For: Thornton
• Prepared By: McLaughlin Water Engineers, Ltd.
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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year event. Table III-2 summarizes the maximum flooding depths for significant features
on the course. The expected protection from high water velocities is discussed below.

TABLE m-2
BIG DRY CREEK FLOODING DEPTH ON GOLF COURSE*

Maximum Flooding Depth
Feature Elevation 2-Year 100- Year
(ft) (ft) (ft)
Practice Tee 150 0.0 1.0
Practice Range 14B-154 0.0 5.0
10th Fairway 14B-153 1.0 4.5
10th Green 154-155 0.0 0.0
11th Tee 154-157 0.0 2.0**
11th Fairway 149-154 4.0 6.0
17th Tee 159-162 0.0 0.0
17th Fairway 151-156 3.5 5.5
11th Green 159-161 0.0 0.0
16th Fairway 155-160 0.5 5.0
16th Green 161-163 0.0 0.0
15th Green 160-161 0.0 1.0
15th Fairway, near 153-162 4.0 7.5
Big Dry Creek

*

2-year Q:3,650 cfs; 100-year Q:11,190 cfs.
South tee box only.

**

In addition to overbank changes, the low flow stream length will decrease by about BID
feet due to four stream diversions between 136th Avenue and 1-25. However, the major
flood path will not change significantly. Therefore, the overall stream slope will
increase from about O.lB to 0.22 percent. The rev ised stationing through the reach is
shown by eq uali ties on both the plan and profile sheets (Drawing Nos. 4, 5, and 6).

High Velocity Protection
High velocity zones that could be expected during the 100-year event are shown on
Drawing No.7. Without stream bank stabilization, significant damage to golf course

III-B