Description: Traffic congestion data for roadway segments in the tahoe basin. This dataset represents the roadway segments for which we monitor traffic congestion. This data can be joined to the spatial 'congestion_spatial' dataset by the 'id' field.
Description: Surface and submerged littoral substrates in Lake Tahoe, CA, NV were mapped from high-resolution satellite imagery using Object-Based Image Analysis (OBIA) analysis techniques. The derived substrate classes were translated into three fish habitats classes (spawning, feed and cover, marginal) in order to evaluate the attainment status with environmental standards related to nearshore fish habitat and to improve map products used for land-use planning and regulatory purposes. The results confirm previous satellite mapping efforts that feed and cover habitats and spawning grounds are limited in distribution to distinct areas around the lake. Our results support the use of high-resolution satellite data for discriminating substrate variation at a resolution sufficient to inform regional planning. Management and land-use actions may consider additional focus on these areas to maintain Lake Tahoe littoral fish habitat characteristics.
Service Item Id: 8a0325246ab44159adbaf6e070f5becb
Copyright Text: Jarlath O’Neil-Dunne, Shane Romsos and David Saah
Spatial informatics Group, LLC
July, 2016
F:\GIS\GIS_DATA\FishHabitat\2016Update\FishHabitat
Description: Summarized secchi disk measurements over time. Includes annual average, winter average, summer average, 5 year average, and predicted water clarity measurements. Data obtained from UC Davis. Data is used for the LT-Info secchi indicator graph.
Description: Full dataset of secchi disk (water clarity) measurements over time. Data obtained from UC Davis. Data is used for the LT-Info water clarity monitoring page.