Beach mapping



South Coast sites:

Oregon Beach and Shoreline Mapping and Analysis Program: Pacific Northwest Estuaries and Shores

Beach Morphology Monitoring Program


Beach Profiles - North Umpqua Spit (Reedsport) 18

Beach profiles provide important information concerning the temporal (time) and spatial (cross-shore) variability of the shape of a section of beach. The information derived from these 'repeated' surveys provide a measure of the response of the beach to variations in the offshore wave energy (e.g. winter versus summer wave conditions), which is reflected in accretion of the beach during the summer and erosion in winter. These data also contain important information on how the beach responds to major storms, such as the extreme 1997-98 and 1998-99 winters, in the form of dune or bluff erosion (i.e. how much dune or bluff retreat occurred), data that is extremely useful when designating hazard zones along the coast. Other factors such as the presence of rip embayments or changes in sediment supply may also have a localized effect on the measured response. Beach profile data provided in the figure below were derived from repeated measurements of the beach carried out using a Trimble 5700/5800 RTK-DGPS surveying system. Where available, additional beach morphology information has been derived from Light Detection and Ranging (lidar) data, flown in 1997, 1998, and 2002 by NOAA/USGS/NASA, and most recently in 2008 by DOGAMI. Of note, the dark grey shading captures 68% of the beach variability (i.e. ±1σ about the average profile), while the light grey shading denotes the maximum and minimum beach elevations and is based on all available GPS surveys.



North Umpqua Spit (Reedsport) Profiles 1-26 or click on a profile in the image below.

Reedsport 26 Reedsport 25 Reedsport 24 Reedsport 23 Reedsport 22 Reedsport 21 Reedsport 20 Reedsport 19 Reedsport 18 Reedsport 17 Reedsport 16 Reedsport 15 Reedsport 14 Reedsport 13 Reedsport 12 Reedsport 11 Reedsport 10 Reedsport 9 Reedsport 8 Reedsport 7 Reedsport 6 Reedsport 5 Reedsport 4 Reedsport 3 Reedsport 2 Reedsport 1