Petrolia Project Area
In 2007, GRCC personnel performed a sediment source assessment on the roads and erosive stream banks within the lower Mattole area. The scope of this project encompasses the area from McGuiness Creek to the Mattole River estuary. GRCC staff identified over 100 sites with the potential to reduce 72,540 cubic yards of sediment from entering the watercourses. The implementation phase began in the summers of 2008 and will reach completion in 2011.
To measure the effectiveness of the upcoming sediment reduction work in the Lower Mattole, turbidity samples were taken at selected creeks. Turbidity, a measure of the water’s cloudiness, is an indicator of the amount of sediment a stream is carrying and therefore it’s suitability for fish habitat. Samples were collected during the winter of 2008 and the project will continue for up to four years. The results will give us a better understanding of how to make our work more effective.