Southern California’s Shrinking Salton Sea

Free webcast today, starts at 11am PST!  Hurry and sign up!

Southern California’s Shrinking Salton Sea: Mapping, Managing and Mitigating New PM10 Air Pollution Sources

The Imperial Irrigation District (IID) Water Conservation and Transfer Project includes a long-term transfer of up to 303,000 acre-feet of water annually from IID to the San Diego County Water Authority, and the Coachella Valley Water District. The Water Transfer Project, along with other factors affecting Salton Sea inflows and water balance, will result in accelerated exposure of the Salton Sea floor. As the Sea continues to recede, there is potential for windblown dust emissions from the exposed dry lakebed (the playa). A significant portion of this windblown dust is PM10 (particulate matter with an aerodynamic diameter of 10 micrometers or less). PM10 are approximately 1/7th the thickness of a human hair, are small enough to be inhaled, and represent a potential human health risk.

The Salton Sea Air Quality Program is focused on monitoring and mitigating dust emissions from exposed Salton Sea playa. Remote sensing is a key component of this program, and will be used to map playa surfaces, vegetative cover, and active dust source areas. Learn how satellite, aerial and UAV images all contribute to this effort and how they are being processed using Trimble eCognition image analysis software. The presentation will also discuss dust control pilot projects, such as Surface Roughening, and the remote sensing techniques used to inform design and evaluate dust control effectiveness.

Local GIS Jobs This Week

GIS Analyst – City of Glendale

GIS Manager – Kern County

GIS Administrator – City of Corona

Field Data Technician – San Joaquin/Lancaster/Victorville area

GIS Data Technician – Pasadena area

GIS Application Developer – Los Angeles area

Senior GIS Technician – Pasadena area

GIS Specialist – Rosemead area

GIS Project Specialist – Los Angeles area

GIS Analyst – SANDAG

Land Records Information

Need access to Tract and Parcel maps for a particular property?  Maybe you want to incorporate Tract and Parcel map data in your applications?  Take a look at the Land Records data provided by the Los Angeles County GIS Data Portal.  The data has links to thousands of scanned documents online.

Here you can download shapefiles with links to Tract maps, Parcel maps, Records of Survey, Township plats and Landgrants, Subdivision activity, and City boundaries.  Most of the data seems to be updated every quarter.


You can also take a look at their Land Records Viewer too.