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Wetlands and riparian areas have a variety of native plant species that are adapted to growing in locations where the soils are wet during all or part of the year. Well established wetlands and riparian areas provide a complex ecosystem that support a diverse combination of plants and animals.

It is important to conserve and improve the wetlands and riparian areas along the Deschutes River and Tumalo Creek in Bend. These areas serve several functions that protect and enhance the quality of both animal and human life within the urban area in many ways. Wetlands and riparian areas:

•    Reduce stream velocities that can erode or damage stream banks and property.

•    Provide storage for water during peak flows and flooding conditions.

•    Trap or filter sediment and runoff water from upland areas and impervious surfaces.

•    Provide shade over the river that helps water quality by reducing the warm water temperatures that produce algal blooms.

•    Provide shade to help moderate water temperature to support fish and other aquatic animals.

•    Provide vegetation and woody debris that serve as habitat and nesting areas for a variety of aquatic animals, birds, and mammals.

•    Provide a safe corridor for birds, amphibians, and mammals that live and feed along the river.

•    Provide a transition area between aquatic and upland habitat areas during animal migration.

Wetlands within Bend were inventoried and evaluated in the summer of 2000 as part of the preparation of a Local Wetland Inventory, a required Periodic Review update of the Comprehensive Plan. The photo below is an example of the significant and non-significant wetlands mapped during this Local Wetland Inventory process. Table 2-2 lists the significant wetlands. All of the significant wetland sites are along the Deschutes River.

Bend’s Local Wetland Inventory replaces the older National Wetlands Inventory map for the urban area.

In 2000, the riparian areas within Bend were also inventoried and evaluated. The riparian area along the Deschutes River and Tumalo Creek are considered significant resources under Statewide Planning Goal 5. Conflicting uses within the riparian corridor are primarily existing and future residential development, new park development, commercial development and other uses such as roads, trails, and docks.

Any development within the bed of the Deschutes River or Tumalo Creek, or within the riparian corridor, including the removal or enhancement of riparian vegetation, must meet standards in the city’s land division and zoning codes. In addition to local code requirements, the Oregon Division of State Lands and Oregon Department of Fish and Wildlife have responsibility to review and approve developments within wetlands and the Deschutes River.

Table 2-2 Significant Wetlands in Bend

Inventory

Field Code

General Location of Wetland

R9

At south edge of UGB on east side of river. Land area about 2.5 acres

R8a

Upstream from COI hydroelectric plant. Land area about 1.5 acres.

R8

Downstream from COI hydroelectric plant. Land area about 1 acre

R7

Downstream from old log deck footbridge, east side. Land area less than 1 acre.

R5

Upstream from Colorado Ave. bridge on west side. Land area about 6.5 acres.

R4

Downstream below Newport Bridge on east side. Land area about 1 acre.

R3

Both sides of river below 1st Street rapids along the River Run trail and below cliffs. Land area about 5 acres.

R2a

Just upstream from North Unit dam. Land area about 2.5 acres.

R1

Between Riverhouse motel to Sawyer Park. Land area about 5 acres.

R1a

Series of small wetlands from Sawyer Park to RimRock Village footbridge. Land area about 3 acres.