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

Stream Name: Frank Dan Slough Survey Date: 2017-09-08
Organization Name: Pearson Ecological Project Name: Project Monitoring
Stream Segment #: Stream Section #:
Data entered by: ZoAnn Survey ID: 75

Step 1. Benchmark Location

Directions to Benchmark: 1/2 way down Beach Road off Chehalis Road

Step 2. Cross-Sectional Survey

Latitude: 49.28780 Longitude: -121.90600
Location relative to benchmark: at benchmark Photos Taken? no
Bankfull Channel Width: 4.38 Average Bankfull Depth: 36.70
Wetted Channel Width: 2.65 Average Wetted Depth: 12.00
Measurements taken every 0.50 metres Number of measurements taken: 10

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 3.50 4.00 4.20 Right Bank
Wetted Depth 11.00 14.00 14.00 11.00 10.00 Wetted Depth
Bankfull Depth 15.00 44.00 45.00 46.00 47.00 45.00 51.00 15.00 29.00 15.00 Bankfull Depth

Step 3. Stream Discharge

Cross-sectional area of wetted stream (m2)
Discharge Wetted Width: 2.650 Discharge Average Depth: 0.120 = 0.318
Average Time (sec)
7.540 9.230 8.320 8.430 12.000 45.52 9.10
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Total Trials / 5 Average Time
Average Velocity (sec)
6.000 9.10 0.659
Length (m) Average Time (sec) Average Velocity (m/sec)
Average Stream Discharge (m3/sec)
0.318 0.659 x 0.8 0.168
Cross sectional area (m2) Average velocity (m/sec) correction factor Discharge (m3/sec)