Streamkeepers Database | Module 3 Water Quality Index

Module 3 Water Quality Index

Stream Name: LAWSON CREEK | Survey Date: January 15th, 2019
Chemical Test	Result	Q-value	Weighting	Index Value
Temperature Change: Temperature	4.4	90.00	X 0.10 =	9
Oxygen Saturation:	120.00	90.00	x 0.17 =	15.3
pH (units):	6.60	80.00	x 0.11 =	8.8
Turbidity (cm):	30.00	80.00	x 0.08 =	6.4
Total = Water Quality Index (Compare this value to the Water Quality Chart below)				39.5

Water Quality Chart

Good

40-45

Acceptable

30-40

Marginal

20-30

Poor

< 20

Survey Results

Stream Name: LAWSON CREEK	Survey Date: January 15th, 2019
Organization Name: West Vancouver streamkeepers	Project Name: H2O study
Data Entered by: Leslie	Survey ID: 356

Step 1 Temperature

Time of Day	Air Temp (0^o)	Water Temp (0^o)
am
pm	5.10	4.40
Difference in water temperature:		4.4
Q Value:		90.00

Site	Air Temp(0^o)	Water Temp(0^o)
Upstream:
Downstream:
Difference in water temperature:		4.4
Q Value:

Step 2 Dissolved Oxygen

Concentration (mg/l):	15.00
% Saturation:	120.00
Equipment (if not Hach):

Step 3 pH

pH Reading:	6.60
Equipment:
Nitrites:
Conductivity:
Other one:

Step 4 Turbidity

Tubdity (JTU):
Tubdity (NTU):
Tubdity (cm):
Tubdity (cm) greater than (>):	30.00
Background Tubdity:
Tubdity increase over background:
Equipment