FLOOD00455

• Designation Number: 94
• County: Adams
• County: Arapahoe
• County: Douglas
• Community: Denver Metro Region
• Stream Name: Sloans Lake Basin
• Title: Flood Hazard Area Delineation - Sloans Lake Basin, Denver, Edgewater, Lakewood, Wheat Ridge, CO
• Date: 10/1/1977
• Designation Date: 1/1/1978
• Floodplain - Doc Type: Floodplain Report/Masterplan

Another major drainage facility within the Basin is the Rocky Mountain
Ditch, an open channel irrigation line in lakewood extending from Morse
Park at 20th Avenue to 32nd Avenue and Wadsworth Boulevard. Information
received from the Ditch Company and Denver Parks Department revealed that
this facil ity supplies water to Sloans lake during the summertime through
an 18-inch clay diversion pipe inleting at 32nd Avenue and Marshall Street
and discharging into the storm sewer at 26th Avenue and Gray Street which
conveys the water to the lake. This irrigation ditch also serves as an
unintentional storm water drainage facility for the western most portion
of the Basin with several storm sewer inlets draining into it.

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location

Old Colfax, Denver

17th Ave. & Newton
St.. Denver

24th & Sheridan,
Denver

18th & Sheridan,
Denver

Edgewater

Edgewater

lakewood

Type of Facility

54-inch brick undergound
condul t.

Sloans lake outlet struc-
ture, grated drop structure
with 24" and 12" conduit.

Sloans lake Inlet ditch,
2-30" pipes and 23"x14" box
underground and conduits
entering concrete inlet
ditch.

Sloans lake inlet struc-
tures, 27"x43" box and
36"x58" box underground
conduits.

Comb i nat ion 26"x36" box,
30" pipe, and 18"x27" box
underground conduits.

Combination 36" pipe, 42"
pipe and 68"x43" ova 1 pipe,
underground conduit and
open ditch segments.

Combination 36" pipe and
24" pi pe underground con-
duit and open ditch seg-
ments.

limits of Facility

Future Basin development within the study area was considered by util izing

land use plans, zoning maps, neighborhood plans and metropolitan planning

agency growth and deve 1 opment proj ec t ions. I n the bas i n eva 1 uat ion

study completed under Project REUSE, Sloans lake Basin was ranked as a

densely developed area with drainage problems requiring high cost solu-

tions. In general, however, it is anticipated that the future development

of the Basin will not have any appreciable effect on the hydrologic fac-

tors which govern the drainage characteristics of the study area since

the Basin at present is heavily urbanized to a relatively high density.

Federal Blvd. to So.
Platte River.

Conduit enters storm
sewer in Newton St. and
16th Ave.

Structures cross under
Sheridan at northwest
edge of Sloans lake.

Structures cross under
Sheridan at southwest
edge of Sloans lake.

Sub-Basin Delineation

25th & Fenton to 24th
and Sheridan.

There are no well defined natural streams within the Sloans Lake Drainage

Basin. Any storm water runoff not accommodated by the existing storm

Sewer system will flow overland which in most areas wi 11 be somewhat con-

fined to the local street system within the Basin. In some areas, how-

ever, flood waters will follow natural depressions or swales in the topo-

graph until it discharges into a receiving drainageway or structural

facility. All of the drainageways within the Basin flow generally In

an easterly direction and are tributary to the South Platte River, For

identification and descriptive purposes, the major drainageways within

the basin have been divided into sub-basins.

20th and Pierce to 18th
and Sheridan.

20th and Wadsworth to
20th and Pierce.

Sub-basins were defined in relation to the following parameters:

1. Significant differences in land use and ground cover;

2. Major drainageway crossings;

3. Geographic significance of jurisdictional boundaries;

4