Designated Critical Habitat; Umpqua River Cutthroat Trout

DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration

50 CFR Part 226

[Docket No. 970715175-7175-01; I.D. No. 042997B]

RIN 0648-AG58

Designated Critical Habitat; Umpqua River Cutthroat Trout

AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and

Atmospheric Administration, Commerce.

ACTION: Proposed rule; request for comments; and notice of public

hearings.

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SUMMARY: NMFS proposes to designate critical habitat for the Umpqua

River cutthroat trout (Oncorhynchus clarki clarki) pursuant to the

Endangered Species Act of 1973 (ESA) to include: The Umpqua River from

a straight line connecting the west end of the South jetty and the west

end of the North jetty and including all Umpqua River estuarine areas

(including the Smith River) and tributaries proceeding upstream from

the Pacific Ocean to the confluence of the North and South Umpqua

Rivers; the North Umpqua River, including all tributaries, from its

confluence with the mainstem Umpqua River to Toketee Falls; the South

Umpqua River, including all tributaries, from its confluence with the

mainstem Umpqua River to its headwaters (including Cow Creek, tributary

to the South Umpqua River). Critical habitat includes all waterways

below longstanding, natural impassable barriers (i.e., natural water

falls in existence for over several hundred years). Such areas

represent the current freshwater and estuarine range of the listed

species. The economic and other impacts resulting from this proposed

critical habitat designation are expected to be minimal.

DATES: Comments must be received on or before September 29, 1997.

Public hearings on this proposed action are scheduled for the month of

August. See SUPPLEMENTARY INFORMATION for dates and times of public

hearings.

ADDRESSES: Comments should be sent to NMFS, Environmental and Technical

Services Division, 525 NE Oregon St. Suite 500, Portland, OR 97232-

2737. See SUPPLEMENTARY INFORMATION for locations of public hearings.

FOR FURTHER INFORMATION CONTACT: Garth Griffin, NMFS, Environmental and

Technical Services Division, 525 NE Oregon St. Suite 500, Portland, OR

97232-2737, telephone (503/231-2005) or Joe Blum, NMFS, 1335 East-West

Highway, Silver Spring, MD 20910, telephone (301/713-2322).

SUPPLEMENTARY INFORMATION:

Background

On August 9, 1996, NMFS published its determination to list Umpqua

River cutthroat trout (Oncorhynchus clarki clarki) as endangered under

the ESA (61 FR 41514). In its final listing determination, NMFS

concluded that all cutthroat trout life history forms (i.e.,

anadromous, potamodromous, and resident) should be included in the

listed Umpqua River cutthroat trout Evolutionarily Significant Unit.

This conclusion was based on studies conducted by Oregon Department of

Fish and Wildlife (ODFW) and others which indicate that these life

history forms are not completely reproductively isolated and,

therefore, should be considered a single ``distinct population

segment,'' under the ESA and NMFS'' ESA species policy (See 61 FR

41516).

Historically, anadromous, potamodromous, and resident cutthroat

trout likely occurred throughout the Umpqua River basin. The current

freshwater distribution of anadromous and potamodromous life forms is

thought to be limited primarily to the mainstem, Smith, and North

Umpqua Rivers. Resident cutthroat trout appear to remain broadly

distributed throughout the Umpqua River basin, including areas of the

South Umpqua River not thought to support significant anadromous

cutthroat trout populations.

Section 4(a)(3)(A) of the ESA requires that, to the maximum extent

prudent and determinable, NMFS designate critical habitat concurrently

with a determination that a species is endangered or threatened. On

July 19, 1993, NMFS published a Federal Register document (58 FR 38544)

soliciting information and data regarding the present and historic

status of the Umpqua River cutthroat trout, as well as information on

areas that may qualify as critical habitat. At the time of the final

listing, critical habitat was not determinable, since information

necessary to perform the required analyses was not available. NMFS has

determined that sufficient information now exists to designate critical

habitat for this species. NMFS has considered all available information

and data in making this proposal.

Definition of Critical Habitat

Critical habitat is defined in section 3(5)(A) of the ESA as ``(i)

the specific areas within the geographical area occupied by the species

* * * on which are found those physical or biological features (I)

essential to the conservation of the species and (II) which may require

special management considerations or protection; and (ii) specific

areas outside the geographical area occupied by the species * * * upon

a determination by the Secretary of Commerce (Secretary) that such

areas are essential for the conservation of the species.'' (See 16

U.S.C. 1532(5)(A)). The term ``conservation,'' as defined in section

3(3) of the ESA, means `` * * * to use and the use of all methods and

procedures which are necessary to bring any endangered species or

threatened species to the point at which the measures provided pursuant

to this Act are no longer necessary.'' (See 16 U.S.C. 1532(3)).

In designating critical habitat, NMFS considers the following

requirements of the species: (1) Space for individual and population

growth, and for normal behavior; (2) food, water, air, light, minerals,

or other nutritional or physiological requirements; (3) cover or

shelter; (4) sites for breeding, reproduction, or rearing of offspring;

and, generally, (5) habitats that are protected from disturbance or are

representative of the historic geographical and ecological

distributions of this species (See 50 CFR 424.12(b)). In addition to

these factors, NMFS also focuses on the known physical and biological

features (primary constituent elements) within the designated area that

are essential to the conservation of the species and may require

special management considerations or protection. These essential

features may include, but are not limited to, spawning sites, food

resources, water quality and quantity, and riparian vegetation (See

Id.).

[[Page 40787]]

Consideration of Economic, Environmental, and Other Factors

The economic, environmental, and other impacts of a critical

habitat designation have been considered and evaluated. NMFS identified

present and anticipated activities that may adversely modify the

area(s) being considered or be affected by a designation. An area may

be excluded from a critical habitat designation if NMFS determines that

the overall benefits of exclusion outweigh the benefits of designation,

unless the exclusion will result in the extinction of the species (See

16 U.S.C. 1533(b)(2)).

The impacts considered in this analysis are only those incremental

impacts specifically resulting from a critical habitat designation,

above the economic and other impacts attributable to listing the

species or resulting from other authorities. Since listing a species

under the ESA provides significant protection to a species' habitat, in

many cases, the economic and other impacts resulting from the critical

habitat designation, over and above the impacts of the listing itself,

are minimal (see Significance of Designating Critical Habitat section

of this preamble). In general, the designation of critical habitat

highlights geographical areas of concern and reinforces the substantive

protection resulting from the listing itself.

Impacts attributable to listing include those resulting from the

``take'' prohibitions contained in section 9 of the ESA and associated

regulations. ``Take,'' as defined in the ESA means to harass, harm,

pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to

attempt to engage in any such conduct (See 16 U.S.C. 1532(19)). Harm

can occur through destruction or modification of habitat (whether or

not designated as critical) that significantly impairs essential

behaviors, including breeding, feeding, rearing or migration.

Significance of Designating Critical Habitat

The designation of critical habitat does not, in and of itself,

restrict human activities within an area or mandate any specific

management or recovery actions. A critical habitat designation

contributes to species conservation primarily by identifying critically

important areas and by describing the features within those areas that

are essential to the species, thus alerting public and private entities

to the area's importance. Under the ESA, the only regulatory impact of

a critical habitat designation is through the provisions of section 7.

Section 7 applies only to actions with Federal involvement (e.g.,

authorized, funded, conducted) and does not affect exclusively state or

private activities.

Under the section 7 provisions, a designation of critical habitat

would require Federal agencies to ensure that any action they

authorize, fund, or carry out is not likely to destroy or adversely

modify designated critical habitat. Activities that destroy or

adversely modify critical habitat are defined as those alternatives

that ``appreciably diminish the value of critical habitat for both the

survival and recovery'' of the species (see 50 CFR 402.02). Regardless

of a critical habitat designation, Federal agencies must ensure that

their actions are not likely to jeopardize the continued existence of

the listed species. Activities that jeopardize a species are defined as

those actions that ``reasonably would be expected, directly or

indirectly, to reduce appreciably the likelihood of both the survival

and recovery'' of the species (see 50 CFR 402.02). Using these

definitions, activities that destroy or adversely modify critical

habitat may also be likely to jeopardize the species. Therefore, the

protection provided by a critical habitat designation generally

duplicates the protection provided under the section 7 jeopardy

provision. Critical habitat may provide additional benefits to a

species in cases where areas outside the species' current range have

been designated. When actions may affect these areas, Federal agencies

are required to consult with NMFS under section 7 (see 50 CFR

402.14(a)), which may not have been recognized but for the critical

habitat designation.

A designation of critical habitat provides a clear indication to

Federal agencies as to when section 7 consultation is required,

particularly in cases where the action would not result in direct

mortality, injury, or harm to individuals of a listed species (e.g., an

action occurring within the critical area when a migratory species is

not present). The critical habitat designation, describing the

essential features of the habitat, also assists in determining which

activities conducted outside the designated area are subject to section

7 (i.e., activities that may affect essential features of the

designated area).

A critical habitat designation will also assist Federal agencies in

planning future actions, since the designation establishes, in advance,

those habitats that will be given special consideration in section 7

consultations. With a designation of critical habitat, potential

conflicts between Federal actions and endangered or threatened species

can be identified and possibly avoided early in the agency's planning

process.

Another indirect benefit of a critical habitat designation is that

it helps focus Federal, state, and private conservation and management

efforts in such areas. Management efforts may address special

considerations needed in critical habitat areas, including conservation

regulations to restrict private as well as Federal activities. The

economic and other impacts of these actions would be considered at the

time of those proposed regulations and, therefore, are not considered

in the critical habitat designation process. Other Federal, state, and

local authorities, such as zoning or wetlands and riparian lands

protection, may also provide special protection for critical habitat

areas.

Process for Designating Critical Habitat

Developing a proposed critical habitat designation involves three

main considerations. First, the biological needs of the species are

evaluated and essential habitat areas and features are identified. If

alternative areas exist that would provide for the conservation of the

species, such alternatives are also identified. Second, the need for

special management considerations or protection of the area(s) or

features are evaluated. Finally, the probable economic and other

impacts of designating these essential areas as ``critical habitat''

are evaluated. After considering the requirements of the species, the

need for special management, and the impacts of the designation, the

proposed critical habitat is published in the Federal Register for

comment. The final critical habitat designation, considering comments

on the proposal and impacts assessment, is published within 1 year of

the proposed rule. Final critical habitat designations may be revised,

using the same process, as new information becomes available.

A description of the essential habitat, need for special

management, impacts of designating critical habitat, and the proposed

action are described in the following sections for Umpqua River

cutthroat trout.

Essential Habitat of Umpqua River Cutthroat Trout

Available biological information for listed Umpqua River cutthroat

trout can be found in the species' Status Review (Johnson et al. 1994)

and in Federal Register notices of proposed and final listing

determinations (see 59 FR 35089, July 8, 1994; 61 FR 41514, August 9,

1996). Essential Umpqua River cutthroat trout habitat consists of five

components: (1) Spawning and juvenile

[[Page 40788]]

rearing areas; (2) juvenile migration corridors; (3) areas for growth

and development to adulthood; (4) adult migration corridors; and (5)

over-wintering habitat. The Pacific Ocean areas used by listed

cutthroat trout for growth and development to adulthood are not well

understood, and essential areas and features have not been identified.

The current geographic range of Umpqua River cutthroat trout

includes nearshore ocean areas, the mainstem Umpqua River and its

tributaries, and the North and South Umpqua Rivers and their

tributaries. NMFS has determined that the current freshwater and

estuarine range (referred to as the in-river range) of the species is

adequate to ensure the species' conservation. The species' current in-

river range encompasses all essential habitat features (e.g., riverine

conditions, estuaries, headwater areas) in sufficient quantity to

ensure conservation of the species. Therefore, designation of habitat

areas outside the species' current in-river range is not necessary.

NMFS recognizes that the Umpqua River estuary is an essential

migration corridor for listed Umpqua River cutthroat trout and,

accordingly, has included estuary areas as critical habitat in this

designation. However, the importance of marine habitats (i.e., oceanic

or near shore areas seaward of the mouth of the Umpqua River) is not

well understood (Pauley, 1989; Behnke, 1992). In addition to a lack of

biological information concerning the marine life history phase of

cutthroat trout, there does not appear to be a need for special

management consideration or protection of this habitat. Based on

present information, degradation of this portion of the species'

habitat does not appear to have been a significant factor in the

decline of the species. Specifically, existing laws appear adequate to

protect these areas, and special management of this habitat is not

considered necessary at this time. Therefore, NMFS does not propose to

designate critical habitat in marine areas at this time. If additional

information becomes available that supports the inclusion of such

areas, NMFS may revise this designation.

Essential features of the designated in-river areas include

adequate: (1) Substrate; (2) water quality; (3) water quantity; (4)

water temperature; (5) food; (6) riparian vegetation; and (7) access.

Juvenile migration corridors include the North and South Umpqua Rivers

and the mainstem Umpqua River to the Pacific Ocean. Essential features

of the juvenile migration corridors include adequate: (1) Substrate;

(2) water quality; (3) water quantity; (4) water temperature; (5) water

velocity; (6) cover/shelter; (7) food; (8) riparian vegetation; (9)

space; and (10) safe passage conditions. Adult migration corridors and

their essential features are the same as those identified for juvenile

migration corridors.

Need for Special Management Considerations or Protection

In order to assure that the essential areas and features are

maintained or restored, special management may be needed. Activities

that may require special management considerations for listed Umpqua

River cutthroat trout spawning and juvenile rearing areas include, but

are not limited to: (1) Land management; (2) timber harvest; (3) water

pollution; (4) livestock grazing; (5) habitat restoration; (6)

irrigation water withdrawal; (7) mining; (8) road construction; and (9)

dam operation and maintenance. For juvenile and adult migration

corridors, special management considerations also include: (10) Dredge

and fill activities; and (11) dam operations. Not all of these

activities are necessarily of current concern; however, they indicate

the potential types of activities that will require consultation in the

future. No special management considerations have been identified for

listed Umpqua River cutthroat trout while they are residing in the

ocean environment.

Activities That May Affect the Essential Habitat

A wide range of activities may affect the essential habitat

requirements of listed Umpqua River cutthroat trout. These activities

include water and land management actions of Federal agencies (i.e.,

U.S. Forest Service, U.S. Bureau of Land Management, the Federal

Highway Administration, and the Federal Energy Regulatory Commission)

and related or similar actions of other Federally-regulated projects

and lands including livestock grazing allocations in the Umpqua River

Basin by the U.S. Forest Service and U.S. Bureau of Land Management;

hydropower operators (i.e., PacifiCorp) in the Umpqua River system

licensed by the Federal Energy Regulatory Commission; timber sales in

the Umpqua River Basin conducted by the U.S. Forest Service and U.S.

Bureau of Land Management; road building activities authorized by the

Federal Highway Administration, U.S. Forest Service, and U.S. Bureau of

Land Management; and mining and road building activities authorized by

the state of Oregon. Other actions of concern include dredge and fill,

mining, and bank stabilization activities authorized and/or conducted

by the U.S. Army Corps of Engineers throughout the Umpqua River Basin.

The Federal agencies that will most likely be affected by this

critical habitat designation include the U.S. Forest Service, U.S.

Bureau of Land Management, U.S. Bureau of Reclamation, U.S. Army Corps

of Engineers, the Federal Highway Administration, and the Federal

Energy Regulatory Commission. This designation will provide clear

notification to these agencies, private entities, and the public of

critical habitat designated for listed Umpqua River cutthroat trout and

the boundaries of the habitat and protection provided for that habitat

by the section 7 consultation process. This designation will also

assist these agencies and others in evaluating the potential effects of

their activities on listed Umpqua River cutthroat trout and their

critical habitat and in determining when consultation with NMFS would

be appropriate.

Proposed Critical Habitat; Geographic Extent

Proposed critical habitat for listed Umpqua River cutthroat trout

includes: The Umpqua River from a straight line connecting the west end

of the South jetty and the west end of the North jetty and including

all Umpqua River estuarine areas (including the Smith River) and

tributaries proceeding upstream from the Pacific Ocean to the

confluence of the North and South Umpqua Rivers; the North Umpqua

River, including all tributaries, from its confluence with the mainstem

Umpqua River to Toketee Falls; the South Umpqua River, including all

tributaries, from its confluence with the mainstem Umpqua River to its

headwaters (including Cow Creek, tributary to the South Umpqua River).

Critical habitat includes all waterways below longstanding, natural

impassable barriers (i.e., natural water falls in existence for over

several hundred years). Critical habitat includes the bottom and water

of the waterways and adjacent riparian zone. The riparian zone includes

those areas within 300 ft (91.4 m) of the normal line of the high water

mark of the stream channel or from the shoreline of a standing body of

water.

Expected Economic Impacts of Designating Critical Habitat

The economic impacts to be considered in a critical habitat

designation are the incremental effects of critical habitat designation

above the economic impacts attributable to listing or attributable to

authorities other than the ESA (see Consideration of

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Economic, Environmental and Other Factors section of this preamble).

Incremental impacts result from special management activities in areas

outside the present distribution of the listed species that have been

determined to be essential to the conservation of the species. However,

NMFS has determined that the present in-river species range contains

sufficient habitat for conservation of the species. Therefore, NMFS

finds that there are no incremental impacts associated with this

critical habitat designation.

Public Comments Solicited; Public Hearings

NMFS is soliciting information, comments and/or recommendations on

any aspect of this proposal from all concerned parties (see ADDRESSES).

NMFS will consider all information, comments, and recommendations

received before reaching a final decision.

Department of Commerce ESA implementing regulations state that the

Secretary ``shall promptly hold at least one public hearing if any

person so requests within 45 days of publication of a proposed

regulation to designate critical habitat.'' (See 50 CFR 424.16(c)(3)).

Public hearings on the proposed rule provide the opportunity for the

public to give comments and to permit an exchange of information and

opinion among interested parties. NMFS encourages the public's

involvement in such ESA matters.

The public hearings on this action are scheduled as follows:

1. Wednesday, August 20, 6:30 p.m. to 9:30 p.m., Douglas County

Court House, Hearing Room 216, 1036 SE Douglas, Roseburg, OR 97470.

2. Thursday, August 21, 6:30 p.m. to 9:30 p.m., Reedsport Community

Building, Council Chambers, 451 Winchester Avenue, Reedsport, OR 97467.

Interested parties will have an opportunity to provide oral and

written testimony at the public hearings. These hearings are physically

accessible to people with disabilities. Requests for sign language

interpretation or other auxiliary aids should be directed to Jim Lynch

at (503) 230-5422.

National Environmental Policy Act

NMFS has determined that Environmental Assessments and

Environmental Impact Statements, as defined under the authority of the

National Environmental Policy Act of 1969, need not be prepared for

critical habitat designations made pursuant to the ESA. See Douglas

County v. Babbitt, 48 F.3D 1495 (9th Cir. 1995), cert. denied, 116

S.Ct. 698 (1996).

Classification

The Assistant Administrator for Fisheries, NOAA (AA), has

determined that this is not a ``major rule'' requiring a regulatory

impact analysis under E.O. 12291. The regulations are not likely to

result in (1) an annual effect on the economy of $100 million or more;

(2) a major increase in costs or prices for consumers, individual

industries, Federal, state, or local government agencies, or geographic

regions; or (3) a significant adverse effect on competition,

employment, investment, productivity, innovation, or on the ability of

U.S.-based enterprises to compete with foreign-based enterprises in

domestic or export markets.

The General Counsel of the Department of Commerce has certified to

the Chief Counsel for Advocacy of the Small Business Administration,

that the proposed rule, if adopted, would not have a significant

economic impact on a substantial number of small entities as described

in the Regulatory Flexibility Act. NMFS completed an assessment of the

economic impacts of designating critical habitat. NMFS found that since

listing species under the ESA provides significant protection to the

species habitat, the economic and other impacts resulting from critical

habitat designation are minimal. Therefore, a regulatory flexibility

analysis is not required.

This rule does not contain a collection-of-information requirement

for purposes of the Paperwork Reduction Act.

The AA has determined that the proposed designation is consistent

to the maximum extent practicable with the approved Coastal Zone

Management Program of the State of Oregon. This determination has been

submitted for review by the responsible state agencies under section

3.7 of the Coastal Zone Management Act.

References

The complete citations for the references used in this document can

be obtained by contacting Garth Griffin, NMFS (see ADDRESSES).

List of Subjects in 50 CFR Part 226

Endangered and Threatened Species.

Dated: July 24, 1997.

David L. Evans,

Deputy Assistant Administrator for Fisheries, National Marine Fisheries

Service.

For the reasons set out in the preamble, 50 CFR part 226 is

proposed to be amended as follows:

PART 226--DESIGNATED CRITICAL HABITAT

1. The authority citation for part 226 continues to read as

follows:

Authority: 16 U.S.C. 1533.

2. Sec. 226.22, introductory paragraph, is amended by revising the

sixth sentence to read as follows:

Sec. 226.22 Snake River Sockeye Salmon (Oncorhynchus nerka), Snake

River Spring/Summer Chinook Salmon (Oncorhynchus tshawytscha), Snake

River Fall Chinook Salmon (Oncorhynchus tshawytscha).

* * * Hydrologic units (Table 3) are those defined by the

Department of the Interior (DOI), U.S. Geological Survey (USGS)

publication, ``Hydrologic Unit Maps,'' Water Supply Paper 2294, 1986'',

and the following DOI, USGS, 1:500,000 scale hydrologic unit maps:

State of Oregon (1974) and State of California (1978), which are

incorporated by reference. * * *

3. Section 226.23 is added to subpart C to read as follows:

Sec. 226.23 Umpqua River cutthroat trout (Oncorhynchus clarki clarki).

The following areas consisting of the water, waterway bottom, and

adjacent riparian zone of specified lakes and river reaches in

hydrologic units presently accessible to listed Umpqua River cutthroat

trout: The Umpqua River from a straight line connecting the west end of

the South jetty and the west end of the North jetty and including all

Umpqua River estuarine areas (including the Smith River) and

tributaries proceeding upstream from the Pacific Ocean to the

confluence of the North and South Umpqua Rivers; the North Umpqua

River, including all tributaries, from its confluence with the mainstem

Umpqua River to Toketee Falls; the South Umpqua River, including all

tributaries, from its confluence with the mainstem Umpqua River to its

headwaters (including Cow Creek, tributary to the South Umpqua River).

Critical habitat includes all river reaches below longstanding, natural

impassable barriers (i.e., waterfalls in existence for several hundred

years) in the following hydrologic units: North Umpqua, South Umpqua,

and Umpqua. Critical habitat borders on or passes through the following

counties in Oregon: Douglas, Lane, Coos, Jackson, and Klamath counties.

Perennial rivers and creeks within the defined areas are also included

in the critical habitat designation (but are not specifically named),

unless otherwise noted. Adjacent riparian zones are defined as those

areas within a horizontal distance of 300 ft (91.4 m) from the normal

line

[[Page 40790]]

of high water of a stream channel (600 ft or 182.8 m, when both sides

of the stream channel are included) or from the shoreline of a standing

body of water. Figure 1 identifies the general geographic extent of

larger rivers, lakes, and streams within hydrologic units designated as

critical habitat for Umpqua River cutthroat trout. Note that Figure 1

does not constitute the definition of critical habitat but, instead, is

provided as a general reference to guide Federal agencies and

interested parties in locating the general boundaries of critical

habitat for listed Umpqua River cutthroat trout. The complete text

delineating the critical habitat for the species follows.

Hydrologic units (Table 1) are those defined by the Department of

the Interior (DOI), U.S. Geological Survey (USGS) publication,

``Hydrologic Unit Maps,'' Water Supply Paper 2294, 1986, and the

following DOI, USGS, 1:500,000 scale hydrologic unit maps: State of

Oregon, 1974, which are incorporated by reference. This incorporation

by reference was approved by the Director of the Federal Register in

accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the USGS

publication and maps may be obtained from the USGS, Map Sales, Box

25286, Denver, CO 80225. Copies may be inspected at NMFS, Protected

Species Program, Environmental and Technical Services Division, 525 NE

Oregon St.--Suite 500, Portland, OR 97232-2737, or NMFS, Office of

Protected Resources, 1335 East-West Highway, Silver Spring, MD 20910,

or at the Office of the Federal Register, 800 North Capitol Street,

NW., Suite 700, Washington, DC. Critical habitat maps are available

upon request from Garth Griffin, NMFS, Protected Species Branch,

Environmental and Technical Services Division, 525 NE Oregon St. Suite

500, Portland, OR 97232-2737, telephone (503/230-5430).

3. Table 4 and Figure 9 are added to part 226 to read as follows:

Table 4 to part 226--Hydrologic Units \2\ Containing Critical

Habitat for Endangered Umpqua River cutthroat trout and counties

contained in each Hydrologic Unit.

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\2\ Hydrologic units and names taken from DOI, USGS 1:500,000

scale State of Oregon (1974) hydrologic unit map (available from

USGS).

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Hydrologic

Hydrologic unit name unit Counties contained in

number hydrologic unit

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North Umpqua.................. 17100301 Douglas, Lane, Klamath.

South Umpqua.................. 17100302 Douglas, Jackson, Coos.

Umpqua........................ 17100303 Douglas, Lane, Coos.

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