Stormwater Symposium


395362 - Achieving Stormwater Resource Management in Californian Foothill Communities in Sierra Nevada

Tuesday, June 5
2:00 PM - 3:30 PM
Location: Mirage Room
Co-Authors: Jonathan Abelson, Pasadena, CA – Stantec; Martiza Flores-Marquez, Sacramento, CA – Stantec; Rebecca Guo, Sacramento, CA – Stantec; Kenneth Payne, Shingle Springs, CA – El Dorado County Water Agency; Ibrahim Khadam, Sacramento, CA – Stantec; Vanessa Nishikawa, Sacramento, CA – Stantec

Stormwater is now recognized as an important resource that should be managed within the integrated water management structure to balance socioeconomic development and environmental protection all while considering climate change. This paradigm shift signals a proactive step beyond the recently expanded watershed approach for stormwater and dry weather runoff management, and further departs from the traditionally narrow focus on MS4 permit compliance and flood control. In fact, traditional rainfall runoff models have been erroneous when predicting late-season rain-on-snow runoff events. The recent historic drought in California prompted the State to implement timely adjustments to policy, regulations and guidelines to support managing stormwater as a resource, and to consider investments that provide significant progress in stormwater monitoring, capture, treatment and reuse, low impact development and green infrastructure, and groundwater augmentation in urban areas. Similar philosophy and investments are necessary in foothill areas with emerging urban development and changing landscapes for rural and agricultural communities, but would require capturing different opportunities and accommodating unique constraints presented by steep terrains, vast forest lands with high fire potential, and limited groundwater infiltration capabilities. This presentation summarizes the development of a comprehensive strategy to manage stormwater as a resource in the scenic County of El Dorado while assimilating the aforementioned opportunities and constraints. The resulting plan consists of a multipronged approach that is customized for its foothill setting including regional surface reservoirs, watershed management with a focus on forest fuel reduction, and integration of stormwater management from communities and major highways with wetland restoration. The plan also incorporates prioritized actions, affordability considerations, and nexus to other related resource planning and implementation efforts to support efficient and responsible implementation.

Yung-Hsin Sun, PhD, PE, D.WRE

Vice President
Stantec Consulting Services Inc.

Yung-Hsin Sun, Ph.D., P.E., D.WRE is the Chief Water Resources Engineer for MWH Americas, Inc. He is a principal engineer with 29 years of experience leading, managing, and planning large-scale multi-objective, interdisciplinary water resources projects for flood management, water supply and ecosystem restoration. He participated in many high profile water resources planning and management projects including four storage projects under the Cal-Fed Program, San Joaquin River Restoration Program, Oroville Facilities Relicensing Program, and contributed to California Water Plan Update and climate change adaptation strategy development. He led the development of California’s first Central Valley Flood Protection Plan in 2012, and provided strategic and technical support in developing the recommendations for making conservation a California way of life. Dr. Sun has provided expert testimony and services in water right proceedings and water transfer negotiations. Yung-Hsin is active in California Water Education Foundation, American Water Resources Association and other professional organization; he also volunteered in the Folsom High School Music Boosters. He is married with two teen children, living in Folsom, California.


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395362 - Achieving Stormwater Resource Management in Californian Foothill Communities in Sierra Nevada

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