Module 2 Bechmark Location, Cross-sectional Survey, Stream Discharge
| Stream Name: COHO CREEK-MAPLE RID | Survey Date: 2016-05-15 |
| Organization Name: PSKF | Project Name: ARMS streamkeeper tr |
| Stream Segment #: | Stream Section #: |
| Data entered by: Zo Ann Morten | Survey ID: 56 |
Step 1. Benchmark Location
| Directions to Benchmark: left trailhead at end of road at 127th Ave off of 227th street Maple Ridge to cross section |
Step 2. Cross-Sectional Survey
| Latitude: 49.23410 | Longitude: -122.59900 |
| Location relative to benchmark: 1 m downstream | Photos Taken? no |
| Bankfull Channel Width: 5.32 | Average Bankfull Depth: 24.64 |
| Wetted Channel Width: 2.20 | Average Wetted Depth: 4.42 |
| Measurements taken every metres | Number of measurements taken: 12 |
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 | 4.50 | 5.00 | 5.20 | Right Bank | Wetted Depth | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 7.00 | 14.00 | 17.00 | 15.00 | 0.00 | 0.00 | Wetted Depth |
| Bankfull Depth | 0.00 | 2.00 | 0.00 | 7.00 | 23.00 | 33.00 | 40.00 | 49.00 | 59.00 | 52.00 | 6.00 | Bankfull Depth |
Step 3. Stream Discharge
| Cross-sectional area of wetted stream (m2) | Discharge Wetted Width: 2.200 | Discharge Average Depth: 0.130 | = 0.286 | ||||
| Average Time (sec) | |||||||
| 64.000 | 72.000 | 77.000 | 63.000 | 67.000 | 343 | 68.60 | |
| Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Total Trials | / 5 | Average Time |
| Average Velocity (sec) | |||||||
| 10.000 | 68.60 | 0.146 | |||||
| Length (m) | Average Time (sec) | Average Velocity (m/sec) | |||||
| Average Stream Discharge (m3/sec) | |||||||
| 0.286 | 0.146 | x 0.8 | 0.033 | ||||
| Cross sectional area (m2) | Average velocity (m/sec) | correction factor | Discharge (m3/sec) | ||||