11 datasets found

Displays areas with 40% steep slope or greater in the City of Seattle. A polygon feature class showing areas with an incline of 40% or more (10 feet of vertical rise over a...

The shoreline essentially follows the 8 foot contour line, except where the ortho offered further clarification. That 8 foot contour line matches closest to what NAVD88 shows as...

Contours 2ft created from 2001 LIDAR.

Displays areas with liquefaction zones. A polygon feature class that shows liquefaction zones. Used to implement and regulate the City of Seattle's Environmentally Critical...

Displays areas of landslide events based on a Seattle Landslide Study completed by Shannon and Wilson. A polygon feature class showing landslide event inventory. Used to...

This layer displays the urban watercourses showing open stream channels and flow within culverts, drainage laterals, and drainage mainlines. The Washington State Department of...

Displays areas with potential landslides in the City of Seattle. A polygon feature class showing potential landslide areas. Used to implement and regulate the City of Seattle's...

FEMA flood prone areas with 100 foot buffer. Original flood prone areas where table digitized into the City of Seattle GIS CGDB control layer in the mid 90's. Layer may be used...

Displays areas of landslide events based on a Seattle Landslide Study completed by Shannon and Wilson. A polygon feature class showing landslide event inventory. Used to...

Displays areas with wetlands in the City of Seattle. A polygon feature class showing wetlands, which are those areas that are inundated or saturated by surface water or ground...

Peat-settlement-prone areas (sites containing peat and organic soils that may settle when the area is developed or the water table is lowered). Peat settlement-prone areas. Peat...