Form A - Fish Passage - Culvert Inspection - Side 1

Date (mm/dd/yy)

05/30/98

Stream Name

 

Road Name/ID#

7000

Road Location (MoF district)

100 Mile House

UTM/GPS Location

10.680656.5771241

Road Responsibility

Weldwood

1:20 000 Map Sheet

93A.009

Watershed Code

 

Site Number

33

Recorders Name

TA

Culvert Characteristics

Culvert Diameter (mm)

r=0.9/cr=0.9/cl=0.9/

l=1.4

FPC Diameter Estimate (mm)

 

Culvert Length (m)

16

Culvert Slope (%)

3

Culvert Material

steel

High Water Mark (cm)

new culverts/unk.

Culvert Water Velocity (m/s)

unk.

Current Culvert Water Depth (cm)

 

Culvert Shape

round

Culvert Outfall Drop (cm)

r=10/c=0/l=10

Culvert Wetted Width (cm)

full above diameter

Culvert Maintenance

Hi / Mod / L / No

Stream Characteristics

Stream Reach

 

Stream Classification

S1 S2 S3 S4 S5 S6 P

Sediment Source/Degree

Yes / No - Hi / Mod / L

Blue Listed/ Significant

 

Pool Depth at Outfall (cm)

unk.

   

Measure

Measurement(s) Above Culvert

Measurement(s) Below Culvert

Average

Measurement

Mean Wetted Width (m)

~10

~10

 

Mean Bankfull Width (m)

~10

~10

 

Mean Water Depth (cm)

1+

1+

 

Mean Bankfull Depth (cm)

1+

1+

 

Stream Water Velocity (m/s)

1.6 1.8 1.8

1.8 1.8 1.6

1.8

Stream Gradient (%)

5

4.5

5

Fish Presence

Yes / No / No Survey

Yes / No / No Survey

NA

Fish Sampling Method

   

NA

Sampling Effort (time)

   

NA

Species Present

suspect RB

RB

NA

Beaver Activity/Type

none

 

NA

Barrier Evaluation:

Barrier

Full Partial None Undetermined

Barrier Type

 

 

 

velocity barrier to all age classes at present

hanging velocity barrier to juveniles over most flow regimes

Prescription

 

 

 

replace culverts with a bridge

Form A - Fish Passage - Culvert Inspection - Side 2

 

Comments:

- flood conditions at time of survey

- flow is not contained within a defined channel

- two middle culverts completely submerged - potential for road to wash out as has happened before (May 1997)

- adult rainbow trout could not migrate past culverts while attempting to reach spawning habitat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Site Photos: Roll # 6 Inlet upstream photo # 10 Inlet downstream photo # 11

Outlet upstream photo # 12 Outlet downstream photo # 13

Other photos 9- looking down at submerged culvert

14- overflow