OAR 350-081-0570
General Management Area Stream, Pond, Lake and Riparian Area Review Criteria

(1)

Stream, Pond, and Lake Boundaries and Site Plans for Review Uses in Aquatic and Riparian Areas

(a)

If a proposed use would be in a stream, pond, lake or their buffer zones, the project applicant shall be responsible for determining the exact location of the ordinary high watermark or normal pool elevation.

(b)

In addition to the information required in all site plans, site plans for proposed uses in streams, ponds, lakes, and their buffer zones shall include:

(A)

A site plan map prepared at a scale of 1 inch equals 100 feet (1:1,200), or a scale providing greater detail;

(B)

The exact boundary of the ordinary high watermark or normal pool elevation and prescribed buffer zone; and

(C)

A description of actions that would alter or destroy the stream, pond, lake, or riparian area.

(2)

Commission Rule 350-081-0570 (General Management Area Stream, Pond, Lake and Riparian Area Review Criteria) shall not apply to proposed uses that would occur in those portions of the main stem of the Columbia River that adjoin the Urban Area.

(3)

The following uses may be allowed in streams, ponds, lakes and riparian areas and their buffer zones, when approved pursuant 350-081-0570 (General Management Area Stream, Pond, Lake and Riparian Area Review Criteria)(5), and reviewed under the applicable provisions of 350-081-0520 (General Management Area Scenic Review Criteria) through 350-081-0620 (Special Management Area Recreation Resource Review Criteria). Proposed uses in streams, ponds, lakes, and riparian areas and their buffer zones shall be evaluated for adverse effects, including cumulative effects, and adverse effects shall be prohibited.

(a)

The modification, expansion, replacement, or reconstruction of serviceable structures, provided that such actions would not:

(A)

Increase the size of an existing structure by more than 100 percent,

(B)

Result in a loss of water quality, natural drainage, and fish and wildlife habitat, or

(C)

Intrude further into a stream, pond, lake, or buffer zone. New structures shall be considered intruding further into a stream, pond, lake, or buffer zone if any portion of the structure is located closer to the stream, pond, lake, or buffer zone than the existing structure.

(b)

The construction of minor water-related recreation structures that are available for public use. Structures in this category shall be limited to boardwalks; trails and paths, provided their surface is not constructed of impervious materials; observation decks; and interpretative aids, such as kiosks and signs.

(c)

The construction of minor water-dependent structures that are placed on pilings, if the pilings allow unobstructed flow of water and are not placed so close together that they effectively convert an aquatic area to dry land. Structures in this category shall be limited to public and private docks and boat houses, and fish and wildlife management structures that are constructed by federal, state, or tribal resource agencies.

(4)

Uses not listed in 350-081-0074 (Uses Allowed Outright), 350-081-0570 (General Management Area Stream, Pond, Lake and Riparian Area Review Criteria)(2) and (3) may be allowed in streams, ponds, lakes, and riparian areas, when approved pursuant to 350-081-0570 (General Management Area Stream, Pond, Lake and Riparian Area Review Criteria)(6) and reviewed under the applicable provisions of 350-081-0520 (General Management Area Scenic Review Criteria) through 350-081-0620 (Special Management Area Recreation Resource Review Criteria).

(5)

Applications for modifications to serviceable structures and minor water-dependent and water-related structures in aquatic and riparian areas shall demonstrate that:

(a)

Practicable alternatives to locating the structure outside of the stream, pond, lake, or buffer zone and/or minimizing the impacts of the structure do not exist;

(b)

All reasonable measures have been applied to ensure that the structure will result in the minimum feasible alteration or destruction of water quality, natural drainage, and fish and wildlife habitat of streams, ponds, lakes, and riparian areas;

(c)

The structure will be constructed using best management practices;

(d)

Areas disturbed during construction of the structure will be rehabilitated to the maximum extent practicable; and

(e)

The structure complies with all applicable federal, state, and local laws.

(6)

Applications for all other Review Uses in streams, ponds, lakes, and riparian areas shall demonstrate that:

(a)

The proposed use is water-dependent, or is not water-dependent but has no practicable alternative as determined by 350-081-0560 (General Management Area Wetland Review Criteria)(6)(a), substituting the term stream, pond, lake, or riparian area as appropriate.

(b)

The proposed use is in the public interest as determined by 350-081-0560 (General Management Area Wetland Review Criteria)(6)(b), substituting the term stream, pond, lake, or riparian area as appropriate.

(c)

Measures have been applied to ensure that the proposed use results in minimum feasible impacts to water quality, natural drainage, and fish and wildlife habitat of the affected stream, pond, lake, and/or buffer zone. At a minimum, the following mitigation measures shall be considered when new uses are proposed in streams, ponds, lakes, and buffer zones:

(A)

Construction shall occur during periods when fish and wildlife are least sensitive to disturbance. Work in streams, ponds, and lakes shall be conducted during the periods specified in “Oregon Guidelines for Timing of In-Water Work to Protect Fish and Wildlife Resources” (Oregon Department of Fish and Wildlife, 2000), unless otherwise coordinated with and approved by the Oregon Department of Fish and Wildlife. In Washington, the Washington Department of Fish and Wildlife shall evaluate specific proposals and specify periods for in-water work.

(B)

All natural vegetation shall be retained to the greatest extent practicable, including aquatic and riparian vegetation.

(C)

Nonstructural controls and natural processes shall be used to the greatest extent practicable.

(D)

Bridges, roads, pipeline and utility corridors, and other water crossings shall be minimized and should serve multiple purposes and properties.

(E)

Stream channels should not be placed in culverts unless absolutely necessary for property access. Bridges are preferred for water crossings to reduce disruption to streams, ponds, lakes, and their banks. When culverts are necessary, oversized culverts with open bottoms that maintain the channel’s width and grade should be used.

(F)

Temporary and permanent control measures should be applied to minimize erosion and sedimentation when riparian areas are disturbed, including slope netting, berms and ditches, tree protection, sediment barriers, infiltration systems, and culverts.

(d)

Groundwater and surface-water quality will not be degraded by the proposed use.

(e)

Those portions of a proposed use that are not water-dependent or have a practicable alternative will be located outside of stream, pond, and lake buffer zones.

(f)

The proposed use complies with all applicable federal, state, and county laws.

(g)

Unavoidable impacts to aquatic and riparian areas will be offset through rehabilitation and enhancement. Rehabilitation and enhancement shall achieve no net loss of water quality, natural drainage, and fish and wildlife habitat of the affected stream, pond, lake, and/or buffer zone. When a project area has been disturbed in the past, it shall be rehabilitated to its natural condition to the maximum extent practicable. When a project area cannot be completely rehabilitated, such as when a boat launch permanently displaces aquatic and riparian areas, enhancement shall also be required. The following rehabilitation and enhancement guidelines shall apply:

(A)

Rehabilitation and enhancement projects shall be conducted in accordance with a rehabilitation and enhancement plan.

(B)

Natural hydrologic conditions shall be replicated, including current patterns, circulation, velocity, volume, and normal water fluctuation.

(C)

Natural stream channel and shoreline dimensions shall be replicated, including depth, width, length, cross-sectional profile, and gradient.

(D)

The bed of the affected aquatic area shall be rehabilitated with identical or similar materials.

(E)

Riparian areas shall be rehabilitated to their original configuration, including slope and contour.

(F)

Fish and wildlife habitat features shall be replicated, including pool-riffle ratios, substrata, and structures. Structures include large woody debris and boulders.

(G)

Stream channels and banks, shorelines, and riparian areas shall be replanted with native plant species that replicate the original vegetation community.

(H)

Rehabilitation and enhancement efforts shall be completed no later 90 days after the aquatic area or buffer zone has been altered or destroyed, or as soon thereafter as is practicable.

(I)

Three years after an aquatic area or buffer zone is rehabilitated or enhanced, at least 75 percent of the replacement vegetation must survive. The owner shall monitor the replacement vegetation and take corrective measures to satisfy this guideline.

(7)

Stream, Pond, and Lake Buffer Zones

(a)

Buffer zones shall generally be measured landward from the ordinary high water-mark on a horizontal scale that is perpendicular to the ordinary high water-mark. On the main stem of the Columbia River above Bonneville Dam, buffer zones shall be measured landward from the normal pool elevation of the Columbia River. The following buffer zone widths shall be required:

(A)

Streams used by anadromous or resident fish (tributary fish habitat), special streams, intermittent streams that include year-round pools, and perennial streams: 100 feet

(B)

Intermittent streams, provided they are not used by anadromous or resident fish: 50 feet

(C)

Ponds and lakes: Buffer zone widths shall be based on dominant vegetative community as determined by 350-081-0560 (General Management Area Wetland Review Criteria)(7)(b), substituting the term pond or lake as appropriate.

(b)

Except as otherwise allowed, buffer zones shall be retained in their natural condition. When a buffer zone is disturbed by a new use, it shall be replanted with native plant species.

(c)

Determining the exact location of the ordinary high watermark or normal pool elevation shall be the responsibility of the project applicant. The Executive Director may verify the accuracy of, and may render adjustments to, an ordinary high water-mark or normal pool delineation. In the event the adjusted boundary delineation is contested by the applicant, the Executive Director shall, at the project applicant’s expense, obtain professional services to render a final delineation.

(8)

Rehabilitation and Enhancement Plans Rehabilitation and enhancement plans shall be prepared when a project applicant is required to rehabilitate or enhance a stream, pond, lake and/or buffer area. They shall satisfy the following guidelines:

(a)

Rehabilitation and enhancement plans are the responsibility of the project applicant; they shall be prepared by qualified professionals, such as fish or wildlife biologists.

(b)

All plans shall include an assessment of the physical characteristics and natural functions of the affected stream, pond, lake, and/or buffer zone. The assessment shall include hydrology, flora, and fauna.

(c)

Plan view and cross-sectional, scaled drawings; topographic survey data, including elevations at contour intervals of at least 2 feet, slope percentages, and final grade elevations; and other technical information shall be provided in sufficient detail to explain and illustrate:

(A)

Soil and substrata conditions, grading and excavation, and erosion and sediment control needed to successfully rehabilitate and enhance the stream, pond, lake, and buffer zone.

(B)

Planting plans that specify native plant species, quantities, size, spacing, or density; source of plant materials or seeds; timing, season, water, and nutrient requirements for planting; and where appropriate, measures to protect plants from predation.

(C)

Water-quality parameters, construction techniques, management measures, and design specifications needed to maintain hydrologic conditions and water quality.

(d)

A 3-year monitoring, maintenance, and replacement program shall be included in all rehabilitation and enhancement plans. At a minimum, a project applicant shall prepare an annual report that documents milestones, successes, problems, and contingency actions. Photographic monitoring shall be used to monitor all rehabilitation and enhancement efforts.

(e)

A project applicant shall demonstrate sufficient fiscal, administrative, and technical competence to successfully execute and monitor a rehabilitation and enhancement plan.
[Publications: Publications referenced are available from the agency.]

Source: Rule 350-081-0570 — General Management Area Stream, Pond, Lake and Riparian Area Review Criteria, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=350-081-0570.

350–081–0010
Purposes and Applicability 350–081–0012
Affected Area 350–081–0014
Maps 350–081–0016
Review and Approval Required 350–081–0018
Uniform Application of Management Plan 350–081–0020
Definitions 350–081–0030
Standards for Applications 350–081–0032
Application for Review and Approval 350–081–0034
Pre-Application Conference 350–081–0036
Acceptance of Application 350–081–0038
Notice of Development Review 350–081–0040
Comment Period 350–081–0042
Decision of the Executive Director 350–081–0044
Expiration of Approvals 350–081–0046
Changes or Alterations to an Approved Action 350–081–0050
Development Eligible for Expedited Review 350–081–0052
Resource and Treaty Rights Protections Guidelines 350–081–0054
Procedures for Expedited Review Process 350–081–0060
Emergency/Disaster Response Actions 350–081–0070
Exempt Land Uses and Activities 350–081–0072
Prohibited Land Uses and Activities 350–081–0074
Uses Allowed Outright 350–081–0076
Agricultural Buffer Zones in the General Management Area 350–081–0078
Variances 350–081–0080
Applying New Less-Stringent Regulations to Development Approved Under Prior Scenic Area Regulations 350–081–0082
Existing Uses and Discontinued Uses 350–081–0084
Indian Tribal Treaty Rights and Consultation 350–081–0086
Buffers from Existing Recreation Sites 350–081–0090
Agricultural Buildings 350–081–0092
Temporary Use — Hardship Dwelling 350–081–0094
Sewer and Water Services 350–081–0096
Docks and Boathouses 350–081–0098
Home Occupations and Cottage Industries 350–081–0100
Bed and Breakfast Inns 350–081–0102
Small-Scale Fishing Support and Fish Processing Operations 350–081–0104
Resource Enhancement Projects 350–081–0106
Disposal Sites for Spoil Materials from Public Road Maintenance Activities 350–081–0108
Commercial Events 350–081–0110
Columbia River Bridge Replacement 350–081–0112
Signs 350–081–0114
Special Uses in Historic Buildings 350–081–0120
Consolidation of Lots 350–081–0124
Land Divisions and Cluster Development 350–081–0126
Lot Line Adjustments 350–081–0170
Agricultural Land Designations 350–081–0180
Uses Allowed Outright — Agricultural Land 350–081–0182
Uses Allowed through the Expedited Development Review Process — Agricultural Land 350–081–0190
Review Uses — Agricultural Land 350–081–0200
Review Uses with Additional Approval Criteria — Large-Scale or Small-Scale Agriculture 350–081–0210
Approval Criteria for Life Estates — Large-Scale or Small-Scale Agriculture Designations 350–081–0220
Approval Criteria for Specified Review Uses on Lands Designated Large-Scale or Small-Scale Agriculture 350–081–0230
Uses Allowed Outright for Lands Designated Agriculture — Special 350–081–0231
Uses Allowed through the Expedited Development Review Process — Agriculture-Special 350–081–0232
Review Uses for Lands Designated Agriculture-Special 350–081–0234
Approval Criteria for Review Uses on Lands Designated Agriculture-Special 350–081–0236
Uses Prohibited on Lands Designated Agriculture-Special 350–081–0240
Range Conservation Plans 350–081–0250
Forest Land Designations 350–081–0260
Uses Allowed Outright — Forest Land 350–081–0262
Uses Allowed through the Expedited Development Review Process — Forest Land 350–081–0270
Review Uses — Forest Land 350–081–0280
Review Uses with Additional Approval Criteria — Commercial Forest Land, or Large or Small Woodland Designations 350–081–0290
Approval Criteria for Specified Review Uses on Lands Designated Commercial Forest Land or Large or Small Woodland 350–081–0300
Approval Criteria for Fire Protection in GMA Forest Designations 350–081–0310
Approval Criteria for Siting of Dwellings on Forest Land in the GMA 350–081–0320
Approval Criteria for Life Estates in Commercial Forest Land or Small or Large Woodland 350–081–0330
Open Space Designations 350–081–0335
Uses Allowed Outright — Open Space 350–081–0338
Uses Allowed through the Expedited Development Review Process — Open Space 350–081–0340
Review Uses — Open Space 350–081–0350
Residential Land Designations 350–081–0360
Uses Allowed Outright — Residential Land 350–081–0365
Uses Allowed through the Expedited Development Review Process — Residential Land 350–081–0370
Review Uses — Residential Land 350–081–0380
Review Uses with Additional Approval Criteria — Residential Land 350–081–0390
Approval Criteria for Specified Review Uses on Lands Designated Residential 350–081–0400
Rural Center 350–081–0410
Uses Allowed Outright — Rural Center 350–081–0415
Uses Allowed through the Expedited Development Review Process — Rural Center 350–081–0420
Review Uses — Rural Center 350–081–0430
Commercial Land 350–081–0440
Uses Allowed Outright — Commercial Designations 350–081–0445
Uses Allowed through the Expedited Development Review Process — Commercial Designations 350–081–0450
Review Uses — Commercial Designations 350–081–0460
Approval Criteria for Review Uses on Lands Designated on Lands Designated Commercial 350–081–0470
Recreation 350–081–0480
Uses Allowed Outright — Public Recreation and Commercial Recreation 350–081–0485
Uses Allowed through the Expedited Development Review Process — Public Recreation and Commercial Recreation 350–081–0490
Review Uses — Public Recreation and Commercial Recreation 350–081–0500
Approval Criteria for Non-Recreation Uses in GMA-Public Recreation Designations 350–081–0510
Approval Criteria for Non-Recreation Uses in GMA-Commercial Recreation Designations 350–081–0520
General Management Area Scenic Review Criteria 350–081–0530
Special Management Area Scenic Review Criteria 350–081–0540
General Management Area Cultural Resource Review Criteria 350–081–0550
Special Management Area Cultural Resource Review Criteria 350–081–0560
General Management Area Wetland Review Criteria 350–081–0570
General Management Area Stream, Pond, Lake and Riparian Area Review Criteria 350–081–0580
General Management Area Sensitive Wildlife Review Criteria 350–081–0590
General Management Areas Rare Plant Review Criteria 350–081–0600
Special Management Areas Natural Resource Review Criteria 350–081–0610
General Management Areas Recreation Resource Review Criteria 350–081–0620
Special Management Area Recreation Resource Review Criteria 350–081–0630
Notice of Application Requirements
Last Updated

Jun. 8, 2021

Rule 350-081-0570’s source at or​.us