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Geospatial Information Services

Groundwater visualization.

The Henry Madden Library's GIS effort supports a wide range of technologies (e.g. geographic information systems, remote sensing, and global positioning systems) and the following:

Map and Aerial Locator Tool

MALT is a spatially enabled web-based application to search for maps and historical aerials in the Central Valley region of California. NOTE: Best viewed in Firefox and Google Chrome browsers.

San Joaquin Valley Groundwater

An interactive map, California's San Joaquin Valley, showing the depth to ground water from 1970 to the current water year; featuring a swipe tool for comparison of two different years.

3-D Groundwater Model

A 3-D model of groundwater levels, requiring a desktop web browser supporting WebGL; not supported on mobile devices. NOTE: Best viewed in Firefox and Google Chrome browsers.

Fresno Crime Heat Map

An interactive heat map showing crime hot-spots in the City of Fresno, as well the categories of crime.

HML Walking Directions

An HTML-based tool providing walking directions to anywhere on the Fresno State campus from the Henry Madden Library's front door.

GIS Staff

Xiaoming Yang

With more than twenty-three years of experience in Geographic Information Systems (GIS), remote sensing (RS), soft-copy photogrammetry, and global positioning systems (GPS), Dr. Yang has been involved in more than one hundred different projects ranging from health and human policy analyses to urban ecology analysis.

Contact Information

Henry Madden Library Building
5200 N. Barton Ave., M/S ML34
Fresno, CA 93740-8014
P: 559.278.8457
Find on Google Maps.

Schedule One-on-one or Small-group Assistance


We provide assistance:

  • by appointment, or
  • by walk-in during Monday through Friday (except Thursday), 12:00 p.m. to 2:00 p.m. at Map and Aerial Photographs service desk on the First Floor, North Wing.

View more library GIS projects and visit the student showcase.