Stormwater pipe discharge
North Vancouver, British Columbia, Canada
corrected location of WAG-E-03 using zoom on web app. This is where a concrete storm pipe of 0.9m inside diameter surfaces and joins with Wagg Creek just downstream of a pedestrian bridge over the creek on the east side. A large plunge pool with large boulders forms a deep pool due to high energy discharge during storm. Field measured GPS coordinates in NAD83 are -123.0871740, 49.32245002 in Long and Lat, or UTM 493,665E, 5,463,306N
Location created by
Paul Lhotka
- Group: North Shore Streamkeepers Society : Wagg Creek Water Quality Monitoring Group
- Site ID: WAG-E-03
- Lat: 49.3223528
- Lng: -123.0872369
- Waterbody Type: Unknown
- Timezone: America/Vancouver
Latest photos
< 14NTU. Water has a greenish cast, but Secchi disk is still clearly visible. measurements taken with YSI. Strong gray water smell consistently.
Wetted width 15 to 20 cm
Wetted depth ~ 15 mm
pipe incline 8°
Bucket/stopwatch measurement for flow:
1st attempt: 5 L at 1.18 seconds =4.24 L/second
2nd attempt:: 6L at 1.7 seconds = 3.53 L/second
3rd attempt: 7L 1.7 seconds (flow is surging) = 4.18 L/second
Average = 3.98 L/second
you stopwatch and bucket method to test flow. 8 L in two seconds.
Gray water smell, and faint smell of soap.
turbidity <14. Abundant foam in plunge pool. Estimated flow well over 50l/sec
spill reported at 11 am, white substance, but no trace now. chemical smell around plunge pool typical of this location. water temps taken from conductivity meter. cloudy water in pool but not significantly turbid. pipe has relatively low flow.
Foam throughout creek, water brackish, turbid sediment
Strong odor of gray water/ soap fragrance.
Water is cloudy although main stem of creek is observed to be clear.
Will discontinue depth measurements until an instrument can be obtained for accurate measurement. The stick we are using is not long enough. Depth always exceeds 1 metre.
Pool is high; unable to take depth measurement
Deleted pH reading (8.5) - this reading was obtained with pH meter which has since been determined to be incorrectly calibrated.
Water turbid and darkish all the way upstream
Some water discharging from pipe, visual evidence of an old paint spill. Paint remains on vegetation. Concerned that discharge will wash additional paint debris into the creek. Called issue into CNV after hours operation (was told must call back during office hours.)
Water cloudy with algal growth.