City of Boulder Storm Water Quality Program
Boulder Creek Watershed
Total Phosphate Time Series for 1998
North Boulder Creek at Boulder Falls

Preliminary Data - subject to revision

Marker Indicates no data available
Marker Indicates data exceeds plot scale.

Information on Total Phosphate:

Phosphorus is generally found as phosphate (PO4-3). The primary sources of phosphates to surface water are detergents, fertilizers, and natural mineral deposits.

More general information about Total Phosphate
Measurement of Total Phosphate
Factors affecting Total Phosphate
Standards regarding Total Phosphate
Interpretation of Boulder Creek Total Phosphate data
Data Source: City of Boulder Water Quality Monitoring
Point of Contact: Chris Rudkin
Collection and Analysis notes
Analysis method: SM 4500-P B.5

Monitoring site information:
  • Location: North Boulder Creek at Boulder Falls
  • Name: NBC-FALLS
  • Type: Composite
  • Frequency: Monthly
  • Longitude: 105 ° W 24'
  • Latitude: 40 ° N 35'
  • Elevation: 6880 feet asl
  • Site photo
Downstream Site: Boulder Creek at Orodell
Upstream Site: North Boulder Creek diversion to Lakewood

Plot Label Date TP
mg/L as P
01 January, 1998 0.07
02 February, 1998 0.04
03 March, 1998 No Data
04 April, 1998 0.05
05 May, 1998 No Data
06 June, 1998 0.07
07 July, 1998 0.04
08 August, 1998 No Data
09 September, 1998 0.01*
10 October, 1998 0.08
11 November, 1998 0.02*
12 December, 1998 No Data
*value below detection limit:
Detection Limit (if available) 0.03

Preliminary Data - subject to revision

Select on the parameter name to view all Total Phosphate time series plots on the basin map. Select on the table date to view stream Total Phosphate profiles observed on that date. Select here to view all parameters at this site.

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