Module 2 Bechmark Location, Cross-sectional Survey, Stream Discharge

Stream Name: COQUITLAM RIVER Survey Date: 2017-09-22
Organization Name: Pearson Ecological Project Name: Oxbow side channel
Stream Segment #: Stream Section #:
Data entered by: ZoAnn Survey ID: 76

Step 1. Benchmark Location

Directions to Benchmark: Come down trail from River Springs Community Centre 1950 Lodge in Port Coquitlam) at the end of fence line (that is not just an opening for another trail) head to the oxbow - you will note that the trailer storage area is on the other side of hte channel and the benchmark is at the very end of this storage area.

Step 2. Cross-Sectional Survey

Latitude: 49.28650 Longitude: -122.77100
Location relative to benchmark: at benchmark Photos Taken? no
Bankfull Channel Width: 3.10 Average Bankfull Depth: 25.00
Wetted Channel Width: 2.80 Average Wetted Depth: 21.00
Measurements taken every metres Number of measurements taken: 7

First and Last Measurements Taken .1m from the streambank edge

Left Bank 0.10 0.50 1.00 1.50 2.00 2.50 3.00 Right Bank
Wetted Depth 19.00 21.00 21.00 22.00 23.00 20.00 Wetted Depth
Bankfull Depth 1.00 27.00 26.00 28.00 29.00 32.00 31.00 Bankfull Depth

Step 3. Stream Discharge

Cross-sectional area of wetted stream (m2)
Discharge Wetted Width: 2.800 Discharge Average Depth: 0.210 = 0.588
Average Time (sec)
13.500 13.070 18.610 26.050 49.240 120.47 24.09
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Total Trials / 5 Average Time
Average Velocity (sec)
5.000 24.09 0.208
Length (m) Average Time (sec) Average Velocity (m/sec)
Average Stream Discharge (m3/sec)
0.588 0.208 x 0.8 0.098
Cross sectional area (m2) Average velocity (m/sec) correction factor Discharge (m3/sec)