City of Boulder Drinking Water Quality Program
Boulder Creek Watershed
Specific Conductance Time Series for 2000
Como Creek where it enters Lakewood Res.

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:
Como Map
Como Photo
  • Location: Como Creek where it enters Lakewood Res.
  • Name: Como
  • Type: Composite
  • Frequency: Monthly
  • Longitude: 105 ° W 30'
  • Latitude: 39 ° N 59'
  • Elevation: 8241 feet asl
  • Site photo
Downstream Site: North Boulder Creek at Boulder Falls

Plot Label Date SC
µ mhos/cm
01 January, 2000 62
02 February, 2000 63
03 March, 2000 56
04 April, 2000 57
05 May, 2000 42
06 June, 2000 34
07 July, 2000 No Data
08 August, 2000 59
09 September, 2000 59
10 October, 2000 67
11 November, 2000 68
12 December, 2000 59
*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.

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