HYDROMODIFICATION: AN INTRODUCTION AND OVERVIEW. Presented by Jeffrey Haltiner, Ph.D., P.E. Philip Williams & Associates, Ltd. San Francisco, CA May2006. Hydromodification: An Integrated Element of Stormwater Management DISCUSSION TOPICS. HISTORICAL PERSPECTIVE HYDROMOD PROCESSES
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A hero arose…
and the scale of our projectsrapidly expanded
In response to these problems, the regulatory climate has changed dramatically, and we have enteredThe era of multi-objective watershed mgmt
1. Flood hazard management2. Wildlife habitat3. Urban Runoff Water Quality
Stevens Creek, ca 1870 and 1899
1. Flood hazard management2. Wildlife habitat3. Urban Runoff Water Quality4. Downstream impacts from increased runoff (hydro- modification)
Mass site grading and extensive, connected paving lead to large increases in runoff rate and volume.
-Maintain open space-Maintain pervious soils-Disconnect impervious areas-Create pervious zones/buffers
The importance of field work: We learn more from observation than from computer models
Bring the kids