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The Dynamics of the Columbia River Plume Project was sponsored by the National Science Foundation (NSF) grant number OCE 8918193 to Barbara Hickey, Lead Principal Investigator (University of Washington). Other PIs included on the project were Bill Boicourt (University of Maryland), David Jay (University of Washington), and Len Pietrafesa (North Carolina State University). Twenty-two current meter arrays (14 surface and 8 subsurface moorings) were deployed in the vicinity of the mouth of the Columbia River from Oct. 1990 through Feb. 1991. Most sites were paired with a surface mooring and a subsurface mooring located within the same vicinity. Positions for the sites and their mooring ID are shown on the CRmoorsitesfla50.jpg file included with the data. In most cases surface and subsurface moorings for the same location were deployed within a quarter mile of each other and are represented as one station on the chart. If the distance between the surface and subsurface moorings was greater than a quarter of a mile an average position was used to plot that station. Surface moorings are designated by the mooring ID followed by an 'S' to indicate surface while the subsurface moorings have an 'A' appended to the mooring ID. Contour lines for 25, 50, 100, 250, 500 meters are shown. Results from this study can be found in Hickey, B.M., L. Pietrafesa, D. Jay and W.C. Boicourt (1998) The Columbia River Plume Study: Subtidal variability of the velocity and salinity fields. Journal of Geophysical Research, 103(C5): 10339-10368.

These CTD data were obtained during the NSF-sponsored RISE project during July 2004, June 2005, and May-June 2006, on the continental shelf off Oregon and Washington, USA, in the Northeast Pacific Ocean. The data were collected by towing a CTD attached to the towed Triaxus platform. The Triaxus was normally set to undulate between the ocean surface and a depth of 40 to 60m. Transects were obtained, ranging in length from a few km to over 60km.