FLOOD07478

• County: Denver
• County: Jefferson
• Community: Lakewood, Denver,
• Stream Name: Lakewood Gulch
• Basin: South Platte
• Title: Flood Hazard Area Delineation
• Date: 2/1/1979
• Prepared For: Lakewood, Denver, Jefferson County
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

20

to convey the projected flow, and the resulting backwater is

expected to flood one residence located on the southwest corner

of the intersection of Lakewood Gulch and Dudley Street. The

upstream ponding generated by the Carr Street crossing creates

flooding of residences between Dudley Street and Carr Street.

The crossing at Carr Street would be inundated to a depth of

approximately .5 feet. The ponding created by the culvert

crossing between Balsam and Allison Streets results in flooding

of residential structures in this reach. Several structures

immediately upstream of Wadsworth Boulevard are flooded from

backwater created by the small bridge opening under Wadsworth

Boulevard. Overtopping of Wadsworth Boulevard occurs to a depth

of 1.5 feet.

street crossing. No flooding of residential structures is

indicated between the easterly limits of the Lakewood Country

Club and Ingalls Street. Backwater with resulting flooding of

residences between Ingalls and Harlan Streets is caused by the

opening under Harlan Street, which is insufficient to pass the

expected lOa-year flood.

Wadsworth Boulevard to Harlan Street (Sheets 13, 14, 15)

Between Vance Street and Wadsworth Boulevard, the flooding is

caused by backwater created at Vance Street. Like the street

crossings discussed previously, the Vance Street bridge has an

insufficient opening. The overtopping flow and an inadequate

channel capacity cause flooding of residences downstream of

Vance Street. The Lakewood Country Club is expected to be

flooded to an average width of 300 feet. The ten pedestrian

bridges crossing Lakewood Gulch within the Country Club will

likely be destroyed by a 100-year flood. They could conceivably

be washed downstream, causing further restriction at the next

Harlan Street to Sheridan Boulevard (Sheets 15, 16)

The Lakewood Gulch channel in this reach, although appearing

to be less maintained than the reaches further downstream, is

of generally sufficient capacity to convey the laO-year flood

without causing significant flooding. With the exception of

buildings immediately upstream of Sheridan Boulevard, as des-

cribed in the following reach, flooding of structures is not

anticipated.

Sheridan Boulevard to W. lOth Avenue (Sheets 17, 18, 19)

The Sheridan Boulevard crossing creates flooding of the street

to an expected depth of approximately 4.5 feet, as well as

flooding of homes and businesses both upstream and downstream.

With the exception of the reach between Sheridan Boulevard and

Wolff Street, the channel itself (in the absence of backwater

effects caused by street crossings) has sufficient hydraulic

capacity to convey the lOO-year flood between Sheridan Boulevard

and W. lOth Avenue.