City of Boulder Water Quality Monitoring
Boulder Creek Watershed
North Boulder Creek - Boulder Creek
Longitudinal Specific Conductance Profiles for August, 1999

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

Indicated monitoring site:

The above map indicates water quality monitoring sites. To view data at a specific site select it from the map with the mouse.

Plot Label SiteName SC
µ mhos/cm
NBC-Lw North Boulder Creek diversion to Lakewood 25
NBC-FALLS North Boulder Creek at Boulder Falls 37
BC-ORO Boulder Creek at Orodell 46
BC-CAN Boulder Creek at Eben G. Fine Park 59
BC-61 Boulder Creek at 61st St. 121
BC-aWWTP Boulder Creek above WW Plant 132
BC-75 Boulder Creek at 75th St 330
BC-aDC Boulder Creek above Dry Creek 231
BC-95 Boulder Creek at 95th St 242
BC-107 Boulder Creek at 107th St 250
BC-aCC Boulder Creek Above Coal Creek 268
BC-bCC Boulder Creek Below Coal Creek 528
*value below detection limit:
Detection Limit (if available) 1.0

Preliminary Data - subject to revision

Select on the parameter name to view more detailed information for that parameter in this month. Select on the site name to view data time series observed at that station. For monitoring site locations see site location map.

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.

Home | Site Map | Glossary | Bibliography | Contributors
About BASIN | Attribution | Feedback | Search
Last Page Update - Friday December 23, 2005
IMS support provided by