Curtain Creek Wetland Enhancement

Objectives of the Curtain Creek Wetland Enhancement area in Clark County, Washington were to enhance wetlands and associated wildlife habitat and to increase storm water retention and treatment function.  This area of the Curtain Creek wetland complex had historically been straightened for agricultural development, eventually left fallow for several years and becoming overrun with a reed canary-grass dominated plant community.  Habitat values were significantly diminished from pre-development wetlands associated with Curtain Creek.

HENDERSON environmental design-build professionals provided restoration services to the County’s 27-acre Curtain Creek Wetland Enhancement Area water quality/wetland habitat restoration project.  Curtain Creek’s channel was realigned with several shallow wetland ponds excavated.  Large woody debris was placed in the channel and floodplain to enhance habitat complexity.  HENDERSON field ecologists installed over 50,000 native wetland, riparian, and upland buffer plants.  Plant installation included containerized nursery stock, live willow stakes, and plant protection measures including weed mats, browse protection tubes, and organic mulch.  Post-construction, HENDERSON’S annual maintenance activities included manual removal of invasive species, plant care maintenance and protection re-establishment, maintenance documentation for permit compliance, and continued direct communications with County staff regarding prevailing post-construction site conditions (e.g. beaver activity and hydrology levels).

Curtain Creek Wetland Enhancement

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