Chiiloquin ranger district




НазваниеChiiloquin ranger district
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.40


-30 C

'0

120 0

10

0

I

-----. .. ....... .. ------- . . .... ... ...


.. . . . . . . .. . .......

0 10000 20000 30000 40000

Length in Feet

Reach 3: 3,000 feet in length, average valley slope is 6.5%. A stable channel condition would be

represented by type A or B (RST).


Reach 4: 8,000 feet in length, average valley slope is 4.0%, and may be classified as a B stream (RST).

A field visit is necessary to verify the classification.


Crastal Castle Spring: Beginning at the confluence with the Sprague River (rivermile 8.3), the creek.

broken into two reaches going upstream.

Reach 1: 7,200 feet in length, average valley slope is 6.4%. A stable channel condition would be


The subwatershed has two current water rights: Road water (1.0 cfs), and livestock (0.31 af), both held

by the Winema National Forest.


The WIN Inventory identifies several areas needing erosion control work. The locations and remarks are

listed below. Most indicate problems with historic roads draining water, or inadequate culvert structures.

Cited are livestock trampling, need for improvement of overflow channels, fence failures around springs,

and downcutting of channel banks.

T.

35

35

35

35

35

35

35

35

34

34

35

35

35

35

35

35

35

35

35

35

35

35

35

35

R S.

8 15

8 15

8 15

8 11,14,15

8 15

8 22

8 23

8 26

8 33

8 33

8 4

8 9

8 16

8 4,5

8 4,5

8 5,17

8 17

8 27

8 27

8 16

8 5

8 16

8 14,15

8 9

Subdiv.

NW

NW

NW .


NESE

NWNE

NWSW

NWNW

NE

SWSE

SWNE

N1/2


NENE

SWSW

SWSW

NWNW

NWSW

SESW


NWSW

Date

8/93

8/93

8/93

8/93

8/93

8/93

8/93

8/93

8/93

8/93

8/93

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8/93

8/93

Comments

Track has started moderate erosion.

Stream pirated by road.

Old road has become stream bed.

Water in old road templates producing erosion.

Log culvert caused erosion downstream.

No culvert on road 266 causing moderate erosion.

Road fill/culvert causing erosion.

18" waterfall from culvert causing erosion.

Erosion in road, absence of adequate ditches.

Road drainage inadequate.

Culvert inadequate to handle flow, downcut below.

Old skid road has become channel.

Old roads pirated Grouse Spring drainage.

Old road template pirated annual flow.

Old road causing erosion and downcutting.

Road traps runoff causing downcut.

Water table near surface, tire tracks collect water.

Downcut from culvert.

Reservoir overflow pirated by logging template.

Reservoir could be deepened and sloped gradually.

Severe trampling around water bowls.

Fence around Grouse Spring needs repair.

Severe headcutting.

Rocky Hole Reservoir overflow has downcut.

Reach I (private property): 15,000 feet in length, average valley slope is 0.5%. Copperfield Draw enters

the Sprague River at rivermile 14.5 on private property. A stable channel condition would be classified as

E5 or 6 (RST). It appears that the current channel has downcut and straightened.


Reach 2: 5,000 feet in length, average valley slope is 1.3%. The 210 meadow enters Copperfield Draw

in this reach. Currently, though altered, the channel is an F (RST). A stable condition of the reach could

possibly be classified as a C or E (RST) type channel. 1995 observations indicate that downcutting, raw

banks, and streambank erosion are occurring. Past efforts at erosion control have been to install rock and

wire check dam structures. Some are functioning adequately, but most are not. Plans for restoration of

this reach are being studied.


I

5400

. 5200

4-J

. X 5000

4800

.C

! g 4600

! m4400

Lu 4200

Copperfield Draw

Longitudinal Profile & Gradient

. . . . . . ... . . .


. . . ...... ... ... . . .. .... ..... . ........ .


RD213:

. .....g*... X W3'1R Sfl3g.

.. . . ... ..... ... ..... uf-.... h5l°.........


.F,-ja........... .... ...........

.t2pMet e o


, _ _ _ _ _ _ _ .. . . .-.

r iir^Pltr,,, ,,-1,l . TI t.,~l.l,,,

.50


.40

Reach 3: 6,000 feet in length, average

valley slope is 0.7%. According to soil

survey notes, this broad meadow flooded

across the valley floor historically, but

surface water presently flows in an

entrenched channel. Access to the

floodplain has diminished as the channel

has degraded. A normal channel would

beclassified as C4 (RST). The effects of

sedimentation and high velocity run-off

are apparent (downcut streambanks and

straightened channels). A cross-section

and staff gage have been installed near

the top of this reach. Nine flows were

measured in 1995 ranging from 0.9 cfs to

14.4 cfs.

30


20

0

0.

0.

0

0

4000

3800

10

0

0 10000 20000 30000 40000 50000 Remnants of an old rock dam or road

Length in Feet structure exist just above the cross-

section area. Perhaps when the structure

blew out (1965 or 1971), the resulting surge carved the straighter, entrenched channel. Restoration

efforts on this reach are being considered and are recommended to decrease streambank erosion,

sedimentation, and the velocity of water flowing through this reach. These include increasing

meandering and placement of structures in conjunction with riparian planting.


Reaches 2 and 3 could presently be classified as G4 (RST). They are working themselves back toward F

and natural C channels by increasing their overall width, developing point bars, and increasing

sinuosity.


Reach 4: 5,500 feet in length, average valley slope is 1.9%. This portion of the stream channel runs

through a canyon. This is a stable, functioning reach with a B3 (RST) channel.


Reach 5: Wrights Meadow, average valley slope is 0.64%. It may not have had a defined channel and

simply flooded a marsh area. If a channel had been in place, it would have been classed as E5 (RST).

Recent check dams are in place, but scouring occurs around the structures. Improvement suggestions

are to install structures to increase sinuosity, and plant riparian vegetation to reduce streambank erosion.


Reach 6: Currently an ephemeral system due to roads, average valley slope is 8.0%.


No Name Flat Subwatershed - 7,934 acres


There is no flow information available on this subwatershed. The WIN Inventory does not include any

sites in this area. No water rights are recorded from information with the OWRD.


34% of the subwatershed is in the Winema National Forest. There are 27 stream miles, with a stream

density of 2.2 miles/square mile. Riparian areas consist of 263 acres (3% of the drainage). 80% of the

area is comprised of slopes less than 10%, and the entire area is below 5,000 feet. There are 36.5 road

miles in the drainage ( 6.8 miles/square mile). 16% of the stream length falls within 210 feet of a road,

and the mainstem is crossed at least twice. The channel enters the Sprague River at rivermile 25.8.

I


No Name Flat

Longitudinal Profile & Gradient

5400

5200

o 5000

_ 4800

c 4600

a 4400

Q 4200

4000

3800

a(

.................. .. . . . . . .......... ...........,4--- ------

*-1 . 4 ......... . . 4 0

.......... ... . .. . . .............................3


FS E6..1u7: 0

.......--. X- .


I 4 -~~~~~~~~~~

... . . ----------,-- . ---- . 310

0

C

0.

0

co

Reach 1: Private property, average

-valley slope is less than 1%. A stable

channel condition would be classified as

an E5 or 6 (RST). It appears that the

channel is downcut and straightened.


Reach 2: Average valley slope is 2.7%.

Appears to be in broad canyons,

however there have been no site

inspections in this area. A field visit is

required to determine the type and

condition of the channel. Historic

photographs indicate there may be some

problems with the area including the

presence of F type channels.

0

5000 10000 15000 20000 25000

Length in Feet

Dockney Flat Subwatershed - 8,874 acres


There is no flow information available on this subwatershed. The WIN Inventory does not include any

sites in this area. There are no water rights recorded with the OWRD.


87% of the subwatershed is in the Winema National Forest. The area contains 19.2 stream miles (1.4

miles/square mile). 258 acres (3%) within the drainage are classified as riparian. 39% of the area has

less than 10% slopes, with a Northwest aspect. 42.5 road miles and 0.9 railroad miles exist within the

area (3.1 miles/square mile). 32% of the stream miles fall within 210 feet of a road, and the mainstem is

crossed at least three times.

Reach 1: Average valley slope is less

than 1%. A portion of this reach is in

private ownership. Though a defined

channel may not exist, it appears the

drainage enters the Sprague River at

rivermile 30. A stable channel condition

would be classified as an E5 or 6 (RST)

channel.


Reach 2: Average valley slope is over

10%. Springs are present along the

Ya Whee Plateau.


A visit to this area is necessary to

describe the channel condition.

Dockney Flat

Longitudinal Profile & Gradient

5400

5200

5000

L 4800

C 4600

,M 4400

" 4200

4000

3800

.. . . .............. . . . . ......,.,.., ----- - - -

......... . .. . .. . . -- - - -- - - - - -

.... ...... .....

...-- -- - ......... ...... -- -- - -- - -- -- - -- -

I

.50

.40

'30 :r


10

.

A\

. . __ . ,, ,II

0 5000 10000 1

Length in Feet

I 0 . .2000

15000 20000


I

Skeen Subwatershed - 4,607 acres


There is no flow information available on this subwatershed. The WIN Inventory does not include any

sites in this area. There are no water rights recorded with the OWRD.


Cedar Spring lies between Saddle Mountain and Ya Whee Plateau, and the drainage enters the Sprague

River at rivermile 30.5 near the end of S'Ocholis Canyon.


82% of the area is in the Winema National Forest. 235 acres (5% of the drainage) are classified as

riparian. There are 8. stream miles (1.1 miles/square mile) within the area. 41% of the subwatershed

has slopes less than 10%, and 84% of the area is below 5000 feet. There are 25 road miles in the

drainage (3:5 nmiles/square mile): 24% of the stream length is within 210 feet of a road, and the

mainstem is- crossed at least four times. .


A field inspection is needed to determine the condition and channel type of this subwatershed.


Trout Creek Subwatershed - 17,244 acres


OWRD records show two current water rights for Trout Creek, both private: Irrigation (.49 cfs), and

domestic use (.10 cfs). Previous water rights for the Trout Creek Ranch, acquired by the Winema

National Forest, are no longer used.


This is a perennial system comprised of three forks: South Fork, Middle Fork and North Fork. 97% of

the subwatershed is in the Winema National Forest. 606 acres (4%) are classified as riparian. 50% of

the area has slopes less than 10%, and 35% lies below 5000 feet. The aspect is East. The drainage

contains 34.5 stream miles (1.3 miles/square mile). There are 94 road miles and 29.4 railroad miles

(3.5 miles/square mile). 22 road miles coincide with railroad grades. 13% of the stream miles fall

within 210 feet of a road, and the mainstem is crossed at least six times.


24 discharge measurements have been taken in the past five years near the downstream Forest Service

boundary. The flows range from 0.5 cfs to 25 cfs.

South fork (Mainstem)

Trout Creek South Fork Reach 1: Private property, average valley slope

Longitudinal Profile & Gradient is 1.2%. Trout Creek enters the Sprague River

5800 . , 50 at rivermile 38.2. A stable channel condition

5600 i. 'Rd72 would be classified as E5 or 6 (RST) channel.

5600E '3" m

8 5400 -- -.. -.. - . -- Reach 2: 10,000 feet in length, average valley

c 5200 ~~........ ........... ........... ... ....... .J...csoei .%

* 5200.......30 slope is 2.7%.

* 5000 ---... .... ....

O 5000 Nx l^F .........BX4 h Reach 3: 10,000 feet in length, average valley

r 4800 i.Fhk.m..\ Xi b , U slope is 1.4%. A stable channel condition

Lo] 4600 * arm,-. ;;;;_..........I. ......;:. ..... 1 would be classified as E or C (RST) channel.

4400 *. . -......... ..!J..

4200 , .; , Reach 4: Average valley slope is 4.5%.

0 10000 20000 30000 40000 Final reaches: Average valley slope is 15%.

Length in Feet Possibly an A or B (RST) channel.

I


=9

South Subwatershed - 33,533 acres


There is no flow information available on this subwatershed. The WIN Inventory does not include any

sites in this area. There are no water rights recorded with the OWRD.


73% of the subwatershed is in the Winema National Forest. The area contains 3 miles of stream

channels (0.06 miles/square mile). 20 acres (1% of the area) are classified as riparian. Slopes less than

10% occupy 88% of the subwatershed, with no slopes-greater than 40%. The entire area lies below

5,000 feet. There are 17.4 road miles and 4 railroad miles (.4 miles/square mile), with 3.3 miles being

coincident with railroad grades. Roads cross the mainstem at least five times, and 7% of the stream

length falls -within 210 feet of a road.

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