The data contained in this dataset is a synthesis of existing information on levees in the State of Washington. The shapefiles displayed attempt to depict levee centerlines as accurately as possible. Primary data sources include the U.S. Army Corps of Engineers and the Federal Emergency Management Agency, In addition to these sources, inputs from local levee managers were used to augment the aforementioned sources.
The dataset contains lab analyzed water chemistry and field collected data from hand held sondes. This dataset is associated with the following publication: Narr, C.F., H. Singh, P. Mayer, A. Keeley, B. Faulkner, D. Beak, and K.J. Forshay. Quantifying the Effects of Surface Conveyance of Treated Wastewater Effluent on Groundwater, Surface Water, and Nutrient Dynamics in a Large River Floodplain. ECOLOGICAL ENGINEERING. Elsevier Science Ltd, New York, NY, USA, 129: 123-133, (2019).