BASIN-USGS-COB Boulder Creek Millenium Baseline
Boulder Creek Watershed
Total Phosphate Data for 2000 - Boulder Creek at 61st St.
Preliminary Data - subject to revision
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
Factors affecting Total Phosphate
Standards regarding Total Phosphate
Interpretation of Boulder Creek Total Phosphate data
Data Source:
Point of Contact:
Collection and Analysis notes
Monitoring site information:
BC-61 Map
  • Location: Boulder Creek at 61st St.
  • Name: BC-61
  • Type: Composite
  • Frequency: SemiAnnual
  • Longitude: 105 ° W 12'
  • Latitude: 40 ° N 22'
  • Elevation: 5160 feet asl
  • Site photo
Downstream Site: Boulder Creek at 30th St.
Upstream Site: Boulder Creek above WW Plant
Date TP
mg/L as P
June, 2000 < 0.01*
October, 2000 0.04
*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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Last Page Update - Tuesday December 27, 2005