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Walnut Valley Water District, CA
Implements 1:1 GIS Water and Recycled Water Models
for IDSE Compliance
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The Challenge:
The growing Walnut Valley Water District is continually seeking ways to better manage its complex infrastructure with efficiency and accuracy while meeting federal
and state regulatory requirements, specifically the newly implemented EPA IDSE Stage 2 Disinfectant Byproduct Rule.
Ideally, a comprehensive water and recycled water hydraulic model of the entire network would provide the analytical tools necessary to drive current and future operational
expansions while maintaining a high level of service and regulatory compliance.
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The Solution:
As the lead consultant, IDModeling evaluated existing resources including a comprehensive District-wide GIS. Using MWH Soft InfoWater, IDModeling developed two hydraulic models,
each of which maintains a complementary 1:1 link to the District's GIS. The domestic system (potable water) model is designed to meet IDSE requirements from the ground up,
accurately representing every detail of the physical system.
In addition, the domestic system model was calibrated under steady state conditions to match over 240 points in the system. Extended period calibration was achieved for seven days
for both the IDSE-representative week and the maximum demand week, matching water levels at 15 tanks throughout the distribution system.
As these hydraulic models are critical to ongoing planning activities, speed was of the essence. IDModeling staff developed both models' basic system geometry and populated
the attribute database in less than a month, including the addition of over 27,000 pipes as well as junctions, valves, pumps and tanks.
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# # #
IDModeling is a specialty service company, uniquely qualified to deliver
hydraulic modeling solutions for both water/wastewater utilities and
engineering consulting firms. IDModeling focuses on hydraulic model
construction, development, calibration, analyses, and software or
system-specific training as stand-alone services or within the context
of master planning and operational studies. Bringing a customer-first
approach to projects, IDModeling has seen international receptiveness
and works with utilities and consultants to help satisfy SBE, MBE, and
DBE certifications. IDModeling can be reached at the contact
information below and may be visited at
www.idmodeling.com
Contact
Mr. Rajan Ray
rajanray@idmodeling.com
(401) 787-2040
Training Contact
training@idmodeling.com
Employment Contact
careers@idmodeling.com
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