Module 2 Bechmark Location, Cross-sectional Survey, Stream Discharge
| Stream Name: TWAIN CREEK | Survey Date: 2013-08-08 |
| Organization Name: Lake Babine Nation | Project Name: |
| Stream Segment #: | Stream Section #: |
| Data entered by: Leanne Miranda | Survey ID: 29 |
Step 1. Benchmark Location
| Directions to Benchmark: 750 m from mouth of creek |
Step 2. Cross-Sectional Survey
| Latitude: | Longitude: |
| Location relative to benchmark: at benchmark | Photos Taken? no |
| Bankfull Channel Width: 11.20 | Average Bankfull Depth: 0.43 |
| Wetted Channel Width: 4.10 | Average Wetted Depth: 0.20 |
| Measurements taken every 1.00 metres | Number of measurements taken: 14 |
First and Last Measurements Taken .1m from the streambank edge
| Left Bank | 0.10 | 1.00 | 2.00 | 3.00 | 4.00 | 5.00 | 6.00 | 7.00 | 8.00 | 9.00 | 10.00 | 10.80 | 11.00 | 11.10 | Right Bank | Wetted Depth | 0.03 | 0.20 | 0.32 | 0.26 | Wetted Depth |
| Bankfull Depth | 0.04 | 0.17 | 0.09 | 0.29 | 0.33 | 0.37 | 0.58 | 0.74 | 0.90 | 0.72 | 0.94 | 0.26 | 0.15 | Bankfull Depth |
Step 3. Stream Discharge
| Cross-sectional area of wetted stream (m2) | Discharge Wetted Width: 4.100 | Discharge Average Depth: 0.190 | = 0.779 | ||||
| Average Time (sec) | |||||||
| 43.300 | 25.700 | 34.300 | 28.200 | 27.300 | 158.8 | 31.76 | |
| Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Total Trials | / 5 | Average Time |
| Average Velocity (sec) | |||||||
| 10.000 | 31.76 | 0.315 | |||||
| Length (m) | Average Time (sec) | Average Velocity (m/sec) | |||||
| Average Stream Discharge (m3/sec) | |||||||
| 0.779 | 0.315 | x 0.8 | 0.196 | ||||
| Cross sectional area (m2) | Average velocity (m/sec) | correction factor | Discharge (m3/sec) | ||||