City of Boulder Water Quality Monitoring
Boulder Creek Watershed
North Boulder Creek - Boulder Creek
Longitudinal Dissolved Oxygen Profiles for February, 1999

Preliminary Data - subject to revision

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

Information on Dissolved Oxygen:

Dissolved Oxygen (DO) is the amount of oxygen dissolved in the water. DO is a very important indicator of a water body's ability to support aquatic life. The amount of DO in water depends on several factors, including temperature (the colder the water, the more oxygen can be dissolved); the volume and velocity of water flowing in the water body; and the amount of organisms using oxygen for respiration. The amount of oxygen dissolved in water is expressed as a concentration, in milligrams per liter (mg/l) of water. The optimal DO for adult brown trout is 9-12 mg/l. Human activities that affect DO levels include the removal of riparian vegetation, runoff from roads, and sewage discharge.

More general information about Dissolved Oxygen
Measurement of Dissolved Oxygen
Factors affecting Dissolved Oxygen
Standards regarding Dissolved Oxygen
Interpretation of Boulder Creek Dissolved Oxygen 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 DO
NBC-Lw North Boulder Creek diversion to Lakewood 10.37
NBC-FALLS North Boulder Creek at Boulder Falls 8.07
BC-ORO Boulder Creek at Orodell 8.84
BC-CAN Boulder Creek at Eben G. Fine Park 8.91
BC-61 Boulder Creek at 61st St. 10.76
BC-aWWTP Boulder Creek above WW Plant 9.74
BC-75 Boulder Creek at 75th St 6.34
BC-aDC Boulder Creek above Dry Creek 8.09
BC-95 Boulder Creek at 95th St 8.83
BC-107 Boulder Creek at 107th St 8.91
BC-aCC Boulder Creek Above Coal Creek 8.62
BC-bCC Boulder Creek Below Coal Creek 8.97
*value below detection limit:
Detection Limit (if available)  

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.

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