BASIN - 2000 Water Quality label for Boulder Creek at 75th St

	BASIN-USGS-COB Boulder Creek Millenium Baseline	WQ Significance WQ Data Plots Site Location Map WQ Data Table
	Boulder Creek Watershed Water Quality Data Data for 2000 - Boulder Creek at 75th St
	Preliminary Data - subject to revision

Data Source:	BASIN-USGS-COB Boulder Creek Millenium Baseline
Point of Contact:	Sheila Murphy


Monitoring site information:

	Location: Boulder Creek at 75th St Name: BC-75 Type: Composite Frequency: SemiAnnual Longitude: 105 ° W 10' Latitude: 40 ° N 30' Elevation: 5105 feet asl Site photo

Downstream Site: Boulder Creek above WW Plant

Upstream Site: Boulder Creek at Dry Creek

Parameter	Units	High Flow Value	Lower Detection Limit	Range Ceiling
Water Temperature	° C	18.00	0.0
Dissolved Oxygen	mg/L	7.20		15
Dissolved Oxygen % of Saturation	-	No Data		200
Specific Conductance	µ mhos/cm	326	1.0	1000
pH	stnd units	7.19	NA
Total Organic Carbon	mg/L	5.43		10
Stream Flow	cfs	181.00		250
Total Alkalinity	mg/L as CaCO₃	52.5	1.0	120
Total Hardness	mg/L as CaCO₃	260.0	0.1
Nitrite	mg/L as N	0.3	0.001	1.2
Nitrate	mg/L as N	4.5	0.02	5.0
Nitrate	mg/L as N	4.9	0.001	5.0
Nitrate + Nitrite	mg/L as N	No Data	0.1	20.0
Ammonia	mg/L as N	2.10	0.1	2.5
Total Phosphate	mg/L as P	0.90	0.03	6.0
Fecal Coliform	#/100 mL	No Data	1.0	150
Total Suspended Solids	mg/L	8	1	100
Total Dissolved Solids	mg/L	194	1	660
Turbidity	NTU	4.68	0.01	60
* indicates measured value below analysis detection limit listed in forth column:
* indicates measured value exceeds plot scale range listed in fifth column:

Preliminary Data - subject to revision

Select on the parameter name to view more detailed information on that parameter at this station. Select on the table date to view stream data profiles observed on that date.

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Thank You! BASIN was a community project which benefitted from over 1000 hours of public volunteer time. BASIN was highlighted by the US EPA in a national case study in its 2001 handbook Delivering Timely Environmental Information to Your Community. Thank you to all volunteers, and especially to the late Jim Waterman, BASIN Project Coordinator!

BASIN was funded through the US EPA EMPACT Program

Last Page Update - Tuesday December 27, 2005 IMS support provided by Enfo.com