GIS is used to track many different City of Walla Walla assets. In many cases, both the spatial component and the attribute information are housed in the GIS database (for example, the x & y location and information about the asset). Examples of assets housed in GIS include roads, street signs, traffic signals, water lines, and properties. Each asset has a spatial location and may be related to other assets, called a spatial relationship. A GIS system helps manage these spatial relationships. Below are facts and statistics garnered from assets in the GIS database in June, 2025:

• The City of Walla Walla corporate city limit is 14.04 sq miles in size.
• The highest elevation point in the City of Walla Walla is 1,330 ft.
• The lowest elevation point in the City of Walla Walla is 780 ft.
• The lowest and highest elevation points are essentially at opposite ends of the eastern and western most points in the city limits.
• The city owns and maintains 157 miles of active sewer main lines.
• The city owns and maintains 195 miles of active water main lines.
• The city owns and maintains 69 miles of active stormwater main lines.
• The city owns and maintains 11,878 active water meters.
• The city owns and maintains 1,459 fire hydrants.
• The city owns and maintains 221 miles of roads.
• The city owns and maintains 6,393 street signs.
• The city owns and maintains 86 signalized intersections and pedestrian crossings.
• The city owns and maintains 1,029 street lights.
• The city manages 14,890 street and park trees.
• The city manages and maintains 18 parks which cover 618 acres within the city limits. This includes Mountain View Cemetery.

Walla Walla Asset Detail Map

Assets can be dynamic, which means they can and do change. For example, a water line may be replaced or added on to, or a street sign may be moved or replaced. With that said, these numbers are accurate only at the time they were queried, but provide a good example of what the city's GIS manages and maintains.

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