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 Jason Casanova Staff Cartographer Ph: (213) 229-9945 Fax: (213) 229-9952 E-mail: cas@lasgrwc.org |
NEWS UPDATE: The GIS parcel data is now available to the public! A DVD of the data can be picked up from the LA County Assessor's Office, 500 W. Temple St., Los Angeles, CA 90012 for a fee of $5.50. OVERVIEW Integrating spatial information from a wider array of sources enriches analysis, planning, and programming processes within our watersheds. Furthermore, collaborative arrangements inhibit data duplication, improve data quality, and facilitate cost-sharing among participants. Unfortunately due to licensing restrictions, proprietary practices of organizations that have developed data, concerns about security and public safety, organizational interests in recovering its cost for data development, lack of staff resources, and the general complexity of working with large data files, data sharing has become a matter of concern within our region. As a strategic initiative, the Watershed Council is working with other agencies and organizations to facilitate a data sharing partnership among stakeholders within the Los Angeles Basin that will streamline the collection, creation, dissemination, and maintenance of spatial information. FEATURED WORK The PreHAP Project - (Preservation of Historic Aerial Photography Within Los Angeles County)  Historic aerial photography is a critical asset for land management in that it provides one of the only links to prior conditions of the landscape necessary to 1) assess changes in environmental conditions, 2) facilitate recording of cultural features, or 3) classify landuse and habitat change. Many of the early collections no longer have negatives if the originals are ever destroyed or lost. In instances where negatives are available (particularly for sets after the 1950s), reproducing new prints has proven to be costly. These photo sets are also showing signs of heavy use and age. In addition, accessibility and searchability is especially limited in options. Photos are open to the public on a restricted basis, and the current monitoring/check-out system limits photo acquisition if demand is high. The aerial photo hardcopies represent the last blueprints for early 20th century Los Angeles County. Currently, no effort has been taken to preserve this collection, and as it continues to be utilized by planners, geologists, assessors, historians, and educators, to name a few, the photography will continue to age and deteriorate. Sponsored by the RMC in June 2004, the Watershed Council conducted a pilot study focusing in on Whittier Narrows and the Duck Farm (just north of Whittier Narrows along the San Gabriel River) to examine the resources needed for developing a comprehensive online repository of historic digital photography for Los Angeles County. Both the raw and rectified digital orthophotography used in the pilot study are available on DVD(s) for the following years: 1928, 1953, 1969, and 1973. (Select a year to view the aerial extents and metadata.) There is a $5.00 service charge per DVD to cover processing and shipping/handling. Imagery comes in the Erdas Imagine file format (.img) and is projected to Albers, NAD 27. Please direct all requests to Cas (213-229-9946). |
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UPCOMING EVENTS |
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ESRI International User Conference |
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DATA & MAPS |
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| Coming Soon! | ||||
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| Data Clearinghouses | ||||
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