From Vision to Reality: Enhancing the Lower Boise River Dry Creek Structure Rehabilitation and Stream Bank Restoration Project September 7 th , 2011 Scott Koberg - Ada Soil & Water Conservation District Meridian, Idaho
Ada Soil & Water Conservation District (Ada SWCD) 1 of 50 conservation districts in Idaho Identified in Idaho statute as “governmental subdivisions of the state” Lead non-regulatory efforts to conserve, sustain, improve, and enhance natural resources 5 or 7 board supervisors Locally elected public officials Contributions and allocations from state, county, local, and other organizations Always looking for partnership opportunities
Dry Creek Erosion Control, Sediment Reduction, Streambank Restoration and Riparian Buffer Project Area
Idaho State Department of Agriculture Water Quality Monitoring Suspended Sediment Concentration: “There was a large spike of SSC that occurred on or just before May 15, 2008 at the lower station… Precipitation records prior to this date showed no significant rain fall and this peak concentration was not observed at the upstream station. This would appear to indicate that the likely source of this large SSC input may have resulted from a portion of a large cut bank sloughing into Dry Creek.” Total Phosphorus: “The total phosphorus (TP) concentrations within Dry Creek remained relatively stable with the exception of the large spike (0.45 mg/L) that occurred at DC-1 on the same date that corresponded to the high SSC spike.”
Dry Creek Stream Bank Rehabilitation and Riparian Restoration Project Goal: Create a stable stream channel and establish a riparian buffer corridor on each side of Dry Creek Objectives: 1) Prevent stream bank erosion 2) Restore stream channel stability 3) Improve surface water quality (Dry Creek & Boise River) 4) Enhance wildlife habitat 5) Provide natural resource education & community outreach Methods: 1) Restore structure to functioning condition 2) Shape & grade “steep wall” eroded stream banks 3) Plant native riparian herbaceous & woody species 4) Create 200’ wide riparian buffer on each side of creek 5) Install public pedestrian pathway & educational signage
Riparian Buffer Plan View Riparian Buffer (18 acres) Structure Location 200’
November 29, 2007 May 23, 2008 September 24, 2008 October 3, 2008
October 8, 2008
August 17, 2009
November 29, 2007 March 25, 2008 August 15, 2008 September 17, 2008
October 7, 2008
June 25, 2010
September 16, 2008 September 24, 2008 October 7, 2008 April 17, 2009
September 17, 2008 June 2, 2009
November 29, 2007 August 15, 2008 September 24, 2008 October 3, 2008
June 2, 2009
Dry Creek Structure Rehabilitation and Stream Bank Restoration Project Successful Implementation Requires 5 “C”s: 1.Commitment (landowner) 2.Cooperators (technical partners) 3.Corps (Army COE) permits 4.Construction contractors 5.Cash
Commitment (landowner)
Cooperators (partners)
Construction Contractors
Cash
Dry Creek Structure Rehabilitation and Stream Bank Restoration Project Successful Implementation Requires 5 “C”s: 1.Commitment (landowner) 2.Cooperators (technical partners) 3.Corps (Army COE) permits 4.Construction contractors 5.Cash
Scott Koberg - adaswcd@clearwire.net (Ada SWCD Manager) http://www.adaswcd.org
Recommend
More recommend
