BASIN-USGS-COB Boulder Creek Millenium Baseline
Boulder Creek Watershed
Specific Conductance Data for 2000 - Boulder Creek at 95th St

Preliminary Data - subject to revision


Information on Specific Conductance:

Specific Conductance is a measure of how well water can pass an electrical current. It is an indirect measure of the presence of inorganic dissolved solids, such as chloride, nitrate, sulfate, phosphate, sodium, magnesium, calcium, and iron. These substances conduct electricity because they are negatively or positively charged when dissolved in water. The concentration of dissolved solids, or the conductivity, is affected by the bedrock and soil in the watershed. It is also affected by human influences. For example, agricultural runoff can raise conductivity because of the presence of phosphate and nitrate.

More general information about Specific Conductance
Factors affecting Specific Conductance
Standards regarding Specific Conductance
Interpretation of Boulder Creek Specific Conductance data
Data Source: USGS Aqueous Organic Carbon Study
Point of Contact: Larry Barber
Collection and Analysis notes

Monitoring site information:
BC-95 Map
  • Location: Boulder Creek at 95th St
  • Name: BC-95
  • Type: Composite
  • Frequency: SemiAnnual
  • Longitude: 105 ° W 78'
  • Latitude: 40 ° N 28'
  • Elevation: 5050 feet asl
  • Site photo
Downstream Site: Boulder Creek at Dry Creek
Upstream Site: Boulder Creek at 107th St

Date SC
µ mhos/cm
June, 2000 310
October, 2000 472
*value below detection limit:
Detection Limit (if available) 1.0

Preliminary Data - subject to revision

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

Return to the BASIN water quality catalog

Return to the BASIN environmental data catalog


INVITATION BASIN is a community project actively seeking public participation. We appreciate all feedback and welcome comments, suggestions and contributions. To find out more about how you can be involved, click here.

BASIN is funded through the US EPA EMPACT Program

Home | Site Map | Glossary | Bibliography | Contributors
About BASIN | Attribution | Feedback | Search
Last Page Update - Tuesday December 27, 2005
IMS support provided by Enfo.com