City of Boulder Storm Water Quality Program
Boulder Creek Watershed
Specific Conductance Time Series for 1998
Coal Creek Above Boulder Creek Confluence

Preliminary Data - subject to revision


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

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
Measurement of Specific Conductance
Factors affecting Specific Conductance
Standards regarding Specific Conductance
Interpretation of Boulder Creek Specific Conductance data
Data Source: City of Boulder Water Quality Monitoring
Point of Contact: Chris Rudkin
Collection and Analysis notes
Analysis method: YSI 600XL probe

Monitoring site information:
CC-confl Map
CC-confl Photo
  • Location: Coal Creek Above Boulder Creek Confluence
  • Name: CC-confl
  • Type: Composite
  • Frequency: Monthly
  • Longitude: 105 ° W 35'
  • Latitude: 40 ° N 48'
  • Elevation: 4955 feet asl
  • Site photo
Downstream Site: North Boulder Creek at Boulder Falls

Plot Label Date SC
µ mhos/cm
01 January, 1998 1015
02 February, 1998 979
03 March, 1998 No Data
04 April, 1998 494
05 May, 1998 No Data
06 June, 1998 596
07 July, 1998 No Data
08 August, 1998 No Data
09 September, 1998 771
10 October, 1998 672
11 November, 1998 660
12 December, 1998 No Data
*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


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