BASIN-USGS-COB Boulder Creek Millenium Baseline
Boulder Creek Watershed
Water Quality Data Data for 2000 - Boulder Creek at 30th St.

Preliminary Data - subject to revision


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

Monitoring site information:
BC-30 Map
  • Location: Boulder Creek at 30th St.
  • Name: BC-30
  • Type: Composite
  • Frequency: SemiAnnual
  • Longitude: 105 ° W 15'
  • Latitude: 40 ° N 75'
  • Elevation: 5200 feet asl
  • Site photo
Downstream Site: Boulder Creek at Eben G. Fine Park
Upstream Site: Boulder Creek at 61st St.

Parameter Units High Flow Value Lower Detection LimitRange Ceiling
Water Temperature° C 14.60 0.0 
Dissolved Oxygenmg/L 8.55   15
Dissolved Oxygen % of Saturation- No Data   200
Specific Conductanceµ mhos/cm 46 1.01000
pHstnd units 7.47 NA 
Total Organic Carbonmg/L 2.72   10
Stream Flowcfs 80.84   250
Total Alkalinitymg/L as CaCO3 12.7 1.0120
Total Hardnessmg/L as CaCO3 9.0 0.1 
Nitritemg/L as N No Data 0.0011.2
Nitratemg/L as N 0.0* 0.025.0
Nitratemg/L as N No Data 0.0015.0
Nitrate + Nitritemg/L as N No Data 0.120.0
Ammoniamg/L as N No Data 0.12.5
Total Phosphatemg/L as P < 0.01* 0.036.0
Fecal Coliform#/100 mL 170 1.0150
Total Suspended Solidsmg/L No Data 1100
Total Dissolved Solidsmg/L No Data 1660
TurbidityNTU 3.09 0.0160
* 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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