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Please note that the following examples of our work include bitmapped versions of some
of our award-winning maps. The process of bitmapping these graphics into a size
appropriate for display in a web browser results in a considerable loss of quality.
Watershed Analysis
NWGIS has been a leader in the application of GIS to the watershed analysis process used widely by large forest landowners
in the Pacific Northwest. The process uses a standard methodology to assess the
cumulative effects of forest practices in a watershed and establish guidelines for future
management and regulation. NWGIS provided GIS support to:
Weyerhaeuser Company
 | GIS support for seven watershed analyses in the Klamath River Basin, Oregon |
| Totaling 145,000 acres |
| In cooperation with the U. S. Forest Service and Oregon Department of Fish and
Wildlife |
| Map example (Brownsworth/Whitworth watershed vicinity map, 8½"x11"): full extent |
| Map example (Brownsworth large woody debris recruitment potential, 11"x17"): map detail |
Related work:
| GIS support for a study of bull trout distribution throughout the Klamath River Basin |
| Produced a series of wall maps, small-format maps, and color slides depicting the
existing and potential distribution of bull trout |
| Map examples (bull trout color slides): slide 1, slide 2, slide 3, slide
4 |
Boise Cascade Corporation
| GIS support for three watershed analyses in Western Oregon and Eastern Washington |
| Totaling 94,000 acres |
| In cooperation with Boise's Pacific Northwest Watershed Project |
| Map example (Onion Creek geology map, 11"x17"): full
extent, map detail |
| Map example (N.F. Teanaway River mass wasting, 11"x17"): full extent, map detail |
| Map example (S.F. Siletz River climate station locations, 8½"x11"): full extent |
Pentec Environmental for Rayonier Northwest Forest Resources
| GIS support for a 30,500-acre watershed analysis on the Olympic Peninsula |
| In cooperation with the Rayonier office in Hoquiam and the Olympic National Forest |
| Map example (N.F. Calawah River subbasins, 11"x17"): full
extent |
| Map example (geomorphic terrains, 11"x17"): full extent,
map detail |
| Map example (target and estimated canopy closure, 11"x17"): map detail |
Hydrologic Studies
Hydrologic investigations are an integral part of the watershed analysis process
described in the previous section. On two of these projects, we implemented a
rain-on-snow model that integrated five GIS layers: slope, aspect, elevation,
precipitation, and forest canopy closure. Here are some other examples of hydrologic
studies for which we provided GIS support:
U.S. Army Corps of Engineers at Fort Lewis, Washington
| GIS support for a study of Murray Creek and its watershed to determine the causes of
reduced stream flow |
| Part of a team, headed by Shapiro and Associates, under a two-year, open-end agreement |
| Map example (Murray Creek stream habitat, 11"x17"): full extent, map detail |
MGS Engineering Consultants
| Derived statistics from a hydrologic model for a 1.5-million-acre drainage basin in
Eastern Oregon |
| Compared the results of two hydrologic models used to predict storm events and mean
annual precipitation for a 5.2-million-acre drainage basin in British Columbia |
| Map example (expected snowpack distribution for wet, normal, and dry years,
11"x17"): full extent, map
detail |
AGI Technologies
| Long-term GIS support for wellhead protection and aquifer recharge studies in Western
Washington |
| Clients included various municipal water districts and the Fort Lewis Army reservation |
Surface Water Planning and Management
Pentec Environmental for Snohomish Basin Work Group
| GIS support for development of the Snohomish River Basin Conditions and Issues
Report |
| Clients were an intergovernmental work group of surface water managers from municipal,
county, and tribal agencies, and local water districts |
| Made extensive use of dynamic segmentation for stream-related
attributes and produced a series of wall maps |
| In cooperation with Snohomish and King County GIS units |
Washington Department of Transportation
| Developed an annotated bibliography of published reports and historical documents
related to water resources in the Snohomish River Basin |
| Created a GIS database of all site-specific recommendations for mitigation, restoration,
or enhancement in relation to water quality, wetlands, fish passage, or fish habitat |
| Designed and developed a custom user interface in ArcView for easy access to this
database by non-GIS professionals |
| Project example (ArcView custom user interface): screen
capture |
Pacific International Engineering for Lewis County
| Currently developing an annotated
bibliography of published reports and historical documents related to water resources
in the Upper Chehalis River Basin |
| Modeled after the Snohomish River Basin project mentioned above |
| In cooperation with the Washington State Department of Transportation |
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