City of Boulder Storm Water Quality Program
Boulder Creek Watershed
Ammonia Time Series for 1998
Boulder Creek above Dry Creek

Preliminary Data - subject to revision

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

Information on Ammonia:

Nitrogen occurs in water in various forms, including nitrate (NO3), nitrite (NO2), and ammonia (NH3). Nitrate enters waterways from lawn fertilizer run-off, leaking septic tanks, animal wastes, industrial waste waters, sanitary landfills and discharges from car exhausts. The burning of fossil fuels releases NOX compounds into the air that fall as acid rain (HNO3). Nitrates in water can cause severe illness in infants and domestic animals.

Ammonia is the decay product of animal proteins and is sometimes found in wastewater. Through the process of nitrification, ammonia in wastewater is oxidized to nitrite and then to nitrate by bacterial or chemical reactions.

More general information about Ammonia
Measurement of Ammonia
Factors affecting Ammonia
Standards regarding Ammonia
Interpretation of Boulder Creek Ammonia data
Data Source: City of Boulder Water Quality Monitoring
Point of Contact: Chris Rudkin
Collection and Analysis notes
Analysis method: Wastewater lab

Monitoring site information:
BC-aDC Map
BC-aDC Photo
  • Location: Boulder Creek above Dry Creek
  • Name: BC-aDC
  • Type: Composite
  • Frequency: Monthly
  • Longitude: 105 ° W 85'
  • Latitude: 40 ° N 29'
  • Elevation: 5060 feet asl
  • Site photo
Downstream Site: Boulder Creek at 95th St
Upstream Site: Boulder Creek at 75th St

Plot Label Date NH3
mg/L as N
01 January, 1998 3.00
02 February, 1998 11.00
03 March, 1998 No Data
04 April, 1998 2.00
05 May, 1998 No Data
06 June, 1998 1.00
07 July, 1998 1.00
08 August, 1998 No Data
09 September, 1998 2.00
10 October, 1998 2.00
11 November, 1998 2.00
12 December, 1998 No Data
*value below detection limit:
Detection Limit (if available) 0.1

Preliminary Data - subject to revision

Select on the parameter name to view all Ammonia time series plots on the basin map. Select on the table date to view stream Ammonia 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.

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