Presentation Title

Maroon Ponds Natural Area: a Case Study of Wetland and Stream Habitat Restoration from Planning to Post-construction

Start Date

February 2018

End Date

February 2018

Abstract

Clean Water Services (CWS) in partnership with Metro as well as other public and private parties has been engaged in landscape-scale wetland and stream restoration in the upper Tualatin River Watershed. Environmental Science Associates (ESA) has assisted CWS and Metro in conservation planning, design, and permitting for key properties in the watershed, including the 47-acre Maroon Ponds property along the main stem river. This poster presentation describes a case-study of wetland/stream habitat restoration from planning to post-construction. The Maroon Ponds Natural Area contains several types of palustrine wetlands; riparian habitat and upland terraces altered from past agricultural use. Several decades ago a 175-foot long berm was constructed across hillside drainages to create a small irrigation pond. Project highlights include: 1) designing, permitting, and constructing the project in one year; 2) incorporating beaver activity into the project design and seeing almost immediate results after construction; 3) Using the Oregon Rapid Wetland Assessment Protocol (ORWAP) to estimate habitat benefits as part of justification for transforming a small impoundment to historic low-gradient streams and connected riparian habitat; and 4) describing three years of results of vegetation, amphibian and turtle monitoring, and on-going management of the site to achieve high-value riparian forest, wetlands, as well as upland woodlands and savanna.

Presentation Option

Undecided

Subjects

Habitat restoration, Wildlife biology, Plant ecology

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Feb 5th, 4:00 PM Feb 5th, 6:00 PM

Maroon Ponds Natural Area: a Case Study of Wetland and Stream Habitat Restoration from Planning to Post-construction

Clean Water Services (CWS) in partnership with Metro as well as other public and private parties has been engaged in landscape-scale wetland and stream restoration in the upper Tualatin River Watershed. Environmental Science Associates (ESA) has assisted CWS and Metro in conservation planning, design, and permitting for key properties in the watershed, including the 47-acre Maroon Ponds property along the main stem river. This poster presentation describes a case-study of wetland/stream habitat restoration from planning to post-construction. The Maroon Ponds Natural Area contains several types of palustrine wetlands; riparian habitat and upland terraces altered from past agricultural use. Several decades ago a 175-foot long berm was constructed across hillside drainages to create a small irrigation pond. Project highlights include: 1) designing, permitting, and constructing the project in one year; 2) incorporating beaver activity into the project design and seeing almost immediate results after construction; 3) Using the Oregon Rapid Wetland Assessment Protocol (ORWAP) to estimate habitat benefits as part of justification for transforming a small impoundment to historic low-gradient streams and connected riparian habitat; and 4) describing three years of results of vegetation, amphibian and turtle monitoring, and on-going management of the site to achieve high-value riparian forest, wetlands, as well as upland woodlands and savanna.