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Client:
Clark Public Utilities |
Background
In 1992, Clark Public Utilities (CPU) and Ecology entered into a Memorandum
of Understanding to establish a local-state partnership for managing water
resources in the Salmon Creek basin. The program was designed to be consistent
with the Chelan Agreement process and to provide a framework for allocating
future groundwater rights. The Salmon Creek Basin Management Plan
was developed as basis for water management decisions throughout much
of Clark County.
Challenges
The plan required an interdisciplinary approach to characterize groundwater,
surface water, and fish resources, as well as fish habitat over a large
area.
Approach
PGG assumed a lead technical role in the project. We also characterized
the hydrogeologic system, evaluated groundwater availability, assessed
groundwater-surface water interactions, and analyzed the potential impacts
associated with future development. Our characterization work entailed
delineating the regional hydrostratigraphy and quantifying groundwater
flow patterns, water level trends, recharge pathways, streamflows, and
other water-balance parameters. We also established a monitoring network
for groundwater levels and streamflows so that CPU and others could assess
the long-term hydrologic trends associated with groundwater development.
PGG provides ongoing support for data collection, management, and analyses.
Outcome
The Salmon Creek Basin Management Plan was released in 2002.
Related Projects
Groundwater Development / Clark Public Utilities: Water Supply Development
Groundwater Modeling / Clark Public Utilities: Remedial Investigations & Groundwater Flow Model