Hydraulic Suction Dredge for Stream Restoration

Ecotone recently utilized a 4" hydraulic suction dredge to remove accumulated sediments from 3,000 linear feet of Falling Spring, a world renowned trout stream near Chambersburg, PA. The 4" diameter dredge was powered by a 23 hp honda engine. The directly coupled pump and engine package produced up to 1500 gallons per minute. Equipped with a 4 inch power jet for powerful vacuum, the pump was attached to a venturri system, to which a 100 foot section of suction hose was used to litterally vacuum the stream bed. The pump and engine setup was mounted and housed on a steel frame and marlex flotation barge. The system will move up to 12 cubic yards of sediment and silt an hour.

On the Falling Spring Project, the dredge was used to clean silt and accumulated sediment from the stream immediately after the stream was narrowed and fish habitat structures were installed. Using the dredge, pools were deepened from 6" to over 3 feet in and around installed fish habitat structures.

To discuss the use and application of a venturri powered suction dredge for your project, call Scott McGill at

(410) 692-7500 or E-mail at smcgill@ecotoneinc.com.

Whats New

Long Green Creek Wetland Construction

Completed April 2007

Ecotone recently completed construction of an 8.5 acre wetland restoration project in the Hydes area of Baltimore County. Wetland hydrology was restored to 8.5 acres of historical wetlands adjacent to Long Green Creek, a high quality trout stream. Construction was completed in winter of 2007 and was planted with 3,000 trees and shrubs in April of 2007. The restored areas will be permanently protected with a conservation easement.

Long Green Headwater Wetland

July 2007

Design plans and permits have been completed for an 18 acre wetland restoration project in the Headwaters of Long Green Creek in Hydes, Maryland on the Wilkerson property. Construction is scheduled for July 2007. Ecotone provided design plans, procured all necessary permits, and will construct and plant the project with over 7,000 hardwood trees and shrubs. Completion is anticipated in the fall of 2007. Wetland mitigation credits are available at the this site to meet Baltimore County and Maryland Department of the Environment wetland mitigation requirements. Call or email Jim or Scott for details.

Wetlands and Forest Restored at the Howard County Conservancy

Spring 2007

19 acres of riparian forest were restored and planted along with 1.5 acres of wetland restoration at the Howard County Conservancy in Woodstock, Maryland. Over 7,000 hardwood trees and shrubs were planted on the Conservancy property. Ecotone provided the project design, permitting, conservation easement, construction, and planting for the project.