MIL2 Catchment Hydrologic Modeling Study
Location: Clark County, WA
Category: Hydrology and Hydraulics
Client: Clark County Public Works
Project Description
CCS assisted Clark County Public Works staff in the stormwater modelling of the Mill Creek subbasin MIL2 to evaluate the effectiveness of different proposed stormwater control standards. This study was in response to the Washington Department of Ecology issued 2019-2024 Phase I Municipal Stormwater Permit that requires Clark County to select a catchment and perform catchment-scale stormwater planning as outlined in Permit section S5.C.6.d. Clark County selected Mill Creek as a priority subbasin due to its location in Salmon Creek watershed, its relatively low level of development in the unincorporated area, presence of salmon populations, and development pressure in the Vancouver urban growth area.
Within Mill Creek, an unnamed tributary stream catchment is selected for catchment-scale stormwater planning. This Mill Creek tributary was labelled MIL2. The focus of this project was development of a hydrologic model and planned scenarios to address hydrology concerns using WWHM-SWMM.
Tasks Accomplished
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Stormwater planning was identified based on new municipal requirements.
#1
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Mill Creek was selected as a priority subbasin.
#2
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A hydrologic model and planned scenarios to address hydrology concerns using WWHM-SWMM.
#3
Contact us.
Support: Support@clearcreeksolutions.com
Joseph T. Brascher Sr.: Brascher@clearcreeksolutions.com
Douglas Beyerlein P.E.: Beyerlein@clearcreeksolutions.com
Joseph Brascher Jr. EIT.: BrascherJr@ClearCreekSolutions.com
Clear Creek Solutions, Inc.
6200 Capitol Blvd. Ste. F
Olympia, WA 98501
360-943-0304
Clear Creek Solutions, Inc.
15800 Village Green Drive #3
Mill Creek, WA 98012
425-225-5997