Geographical Information Systems (GIS)
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Why use GIS?

Your organization’s physical asset data is much easier to interpret when visualized with maps, symbols an summary tables rather than pages of statistics and text.

Geographic Information System (GIS) use helps save money through informed decision making.  Organizing information by location highlights the inter-related nature of facilities, departments and activities.  GIS provides an intuitive method for accessing and managing your valuable collection of physical facilities documents and data.

Why choose Willdan for GIS Services?

We are engineers and planners (problem solvers).  We have performed thousands of projects for hundreds of public agencies.  We are experienced in applying analysis capabilities of GIS to solve many types of public facilities' issues and needs.

Analysis tools allow you to quickly obtain the information you need.  Tools can be chained together in models and scripts to automate frequently performed tasks.

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Extensive practice in many types of projects

Buried Wet Utilities (Sewer, Storm Drain, Water) – Prepared GIS-based inventories of pipes and other related system features with linked construction plans and condition data for reference in field or office.  Files are used for maintenance and capital improvement planning, financial impact and funding studies, system modeling, capacity demand assessments, improvement decisions relative to adjacent or overlying assets, alternatives analysis. [Client agencies: Cities of Ridgecrest, Sierra Madre, Whittier, Brea, Burlingame, Pasadena; County of Los Angeles]  

Community Development (Housing and Zoning Inventories) – Prepared maps, customized inventory data collection software, configured tablet PCs and GPS receivers, collected and analyzed inventory data, developed data analysis output tables.  [Client agencies: Cities of Woodland, Lincoln, Calimesa, County of Tulare]

Pavement Management (Tools and Tracking) – Prepared maps and data tables for inspector street rating actions, condition and structural index referencing, CIP strategy and budget, linked GIS tables to PMS database (MicroPAVER).  [Client agencies: Cities of Temecula, Moreno Valley, South Gate, Lomita, Rolling Hills Estates, Hawaiian Gardens, Rancho Palos Verde, Ridgecrest, Bellflower, Brookings, OR; County of San Luis Obispo] 

Public Safety Planning (Hazard Mitigation) – Prepared an automatic updating map of special flood hazard area (SFHA) and flood insurance rate map (FIRM) panels for reference use with updating when a parcel APN is entered into an Excel worksheet.  [Client agencies: City of Fountain Valley]   

Representative Projects

City of Rolling Hills Estates Storm Drain System

The City contracted with Willdan's GIS group to map the city's storm drain system using GPS handheld and a custom data collection application; determine condition of storm drain pipes; analyze the storm drain data; and develop a phased plan to clean and perform CCTV inspection on the storm drains. Our GIS group presented the report findings and map atlas to the City Council.

City of Los Angeles Tsunami Preparedness Project

tsunami route

In 2009, the California Emergency Management Agency re-mapped the potential tsunami inundation zone for California coastal areas based on new scientific evidence. The City of Los Angeles hired Willdan to revise emergency response documents and evacuation routes using inundation zone data from CalEMA. 

Willdan used GIS throughout the project to revise evacuation maps; document the location and condition of existing signage with GPS; determine new sign locations; and provide data to various city departments, LA County and LA Harbor Department..