FLOOD02900

• County: Adams
• Community: Commerce City
• Basin: South Platte
• Title: Lower First Creek and Direct Flow Area 0055 Major Drainageway Planning
• Date: 5/1/2002
• Prepared For: UDFDC
• Prepared By: Turner Collie & Braden Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

First Creek OSP and FRill
(lg Progress Meeting)
Time: 1 :30
Date: September 15, 1999
Location: Urban Drainage & Flood Control District

MEETING MINUTES

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AGENDA

TumerColIie<SJBraden Ine.

Subject:
Job No.:

Lower First Creek and Direct Flow Area 0055 Outfall Study
35.05096-040

(I) Hydrologic Data Being Collected
Hydrologic Soils
Land Use - Percent Impervious
Subwatersheds
SWMM Connectivity

Place: Urban Drainage and Flood Control District Offices
Date & Time: 9/15/99 I :30 PM

Attendees:

David Mallory (UDFCD)
Edward Stafford (Commerce City)
Rick Moser (TCB)
Darrin Dunkin (Adams County)
Tom Jackson (RMA, USFW)
Tim Kilgannon (RMA)

Bill DeGroot (UDFCD)
Rich Ommert (TCB)
David Center (TCB)
William Miller (Costin Eng.)

(2) - CUHP Model
Version E versus Version F

(3) Remaining Hydrologic Tasks
Decision on Version E or F
Check Subwatershed Boundaries to ADCO Mapping
Refine Percent Impervious Values
Re.run CUHP/UDSWMM
Schedule

Preparer:

David Center

Date: 9/15/99

The purpose of the meeting wasto report on progress on the Outfall Planning and Flood Hazard Area
Delineation Study for the lower First Creek watershed.

(4) Borrow Area #10
Still a Possibility??
Meet With Biologist(s)

Hydrology
Dave C. began the meeting by describing the process used to update the existing maps for the project.
Maps were displayed illustrating the soils, land use, sub-basin designations and S~[ routing elements.
Bill D. stated that future land use developed during the Martin 1 Martin study, for areas upstream of Pena
Blvd., would be used. TC&B would only make minor refinements in the future land use for the area
downstream of Pena Blvd. Existing land use will be defined for the entire basin and verified by recent
Landiscor aerial mapping.

(5) Land Development Projects

The Martin / Martin changes in the SWMM model, upstream of Pena Blvd, will be incorporated into the
overall First Creek SWMM model. In addition, the model will incorporate the E.470 corridor detention
basins.

(6) Next Meeting/Adjournment

Two of three proposed detention cells upstream ofE-470 on Tributary T have been constructed and
should be included in the "Base" model. David M. will provide TC&B with basin storage discharge
characteristics to be included in the SWMM model for these detention areas.

Sub-basin delineations will be revised along the 1-76 corridor and checked against the 2.foot contour
mapping.