FLOOD01644

• Designation Number: 46
• County: Denver
• Community: Denver
• Title: Flood Hazard Boundary Map - Supplementary Report, Sanderson Gulch & Weir Gulch, Denver, Colorado
• Date: 3/1/1975
• Designation Date: 7/1/1975
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Sanderson Gulch Existing Development
Sanderson Gulch Projected Development Existing
Facili ties
Sanderson Gulch Projected Development Without
Reservoirs
Sanderson Gulch Final Hydrology
North Sanderson Gulch, Existing Conditions
North Sanderson Gulch, Final Hydrology
Weir Gulch, Existing Development
Weir Gulch, Projected Development Existing
Facilities
Weir Gulch, Final Hydrology
North Weir Gulch & South Weir Gulch, Final
Hydrology

The curves are self-explanatory. They represent the storm discharge
plotted at each particular design point with the stationing noted.
A vertical drop in a frequency profile indicates the effect of a
reservoir routing at that particular point. Sharp increases in
the profile indicate the inflow of an offchannel basin. Figure
111-6 entitled "Sanderson Gulch, Projected Development, Without
Reservoirs" shows the magnitude of potential flood flows for the
possible condition of all reservoirs having been breached or
physically eliminated. Since the six reservoirs or detention
areas on Sanderson Gulch are under ownership other than the City
of Lakewood, and have been installed for reasons other than flood
control, the possibility of elimination certainly exists. This
same chart shows an almost 50% great~r magnitude of runoff at the
South Platte River, for the 100 year event, for the condition
without the reservoirs as compared to the condition with reservoirs
in place and of adequate design.

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Figure 111-14 to 111-31 are design storm hydrograph
plottings at the following critical locations:

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Sanderson Gulch, Smith Reservoir
Sanderson Gulch, Kendrick Lake
Sanderson Gulch, Jewell Park
Sanderson Gulch, Green Gables
Sanderson Gulch, Clairfield Reservoir
Sanderson Gulch, Bit-a-Sea Reservoir
Sanderson Gulch, Sheridan Blvd.
Sanderson Gulch, So. Platte River
No. Sanderson Gulch, Green Gables Park
No. Sanderson Gulch, Confluence
So. Weir Gulch, Main Reservoir
No. Weir Gulch, Main Reservoir
Weir Gulch, Main Reservoir
Weir Gulch, East Reservoir
Weir Gulch, Sheridan Blvd.
Weir Gulch, Barnum Lake
Weir Gulch, Federal Blvd.
Weir Gulch, So. Platte River

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