San Joaquin Valley Land Subsidence Monitoring Network (1980s)

Map of active San Joaquin Valley Land Subsidence Monitoring Network sites in the 1980s

Detailed Description

History of the San Joaquin Valley Land Subsidence Monitoring Network

By the 1980s, monitoring activities in the San Joaquin Valley were greatly reduced. While 3 new extensometers were constructed, 8 were discontinued, leaving 26 extensometers operating at 18 sites.  The decade also brought with it reduced spirit-leveling networks and a decrease in the frequency of measurements.

Details

Image Dimensions: 554 x 462

Date Taken:

Location Taken: US