| Abstract/Description or Keywords |
This report details the Sediment Source Survey completed under the Salmon River Integrated Watershed Restoration Program (IWRP) Contract by Forsite Consultants Ltd. (Forsite). The assessment is part of the Integrated Watershed Restoration Plan administered by the Ministry of Forests (MoF) and the Ministry of Environment, Lands and Parks (MoELP) for Riverside Forest Products Ltd. (Riverside), Armstrong Division. Roads and trails were assessed for the road portion of the assessment, and landslides, hillslope sediment sources, surface erosion and harvested areas were assessed as part of the hillslope component. The road portion of the assessment was designed to locate sediment sources created by roads, and to locate areas that were not sediment sources, but that were maintenance problems associated with roads and trails. Common concerns identified along the road and trail corridors included surface erosion, cutbank and fillslope erosion/failures, and damaged and/or plugged culverts. The hillslope portion of the assessment was designed to locate landslides within the watershed, using current air photos (1994) as well as through field identification. Landslides were assessed as part of the hillslope component of the assessment, and were described in terms of their cause, type, origin, delivery site, and stream connectivity. Gullies were not assessed at the request of the FRBC contract monitors. However, road, trail, and landslide sediment source concerns occurring within gullies were assessed within the road or hillslope component of the assessment. Hillslopes and harvested areas were assessed for signs of erosion and/or instability, but unless the failures were considered landslides, no formal assessment was conducted on these features. The areas of concern identified in all components of the Sediment Source Survey may pose a threat to human safety, result in a loss to productive forest land and other resources, or may deliver sediment to nearby streams and lakes. The assessment was intended to collect information on sediment sources and areas requiring maintenance within the watershed, to identify sites requiring prescriptions for restoration or rehabilitation, and to identify sites requiring the involvement of a professional. sediment, erosion, water quality |
