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Data Collection

Reliable, high quality stream data is critical to understanding the overall health of a watershed. In particular, how development and other landscape-altering activities can impact stream health and natural stream functions.

Routine monitoring of Salt Lake County streams allows the Watershed Program to assess where watershed conditions appear to be changing, identify areas of concern, and guide stream restoration efforts.

macroinvertebrate sampling with kicknet water chemistry data collected with multimeter

Stream Water Quality Monitoring

An expanded water quality data collection program was undertaken in 2009, and has been refined over time to reflect specific interests in the watershed. Our data is shared with regulatory agencies at the federal, state, and local levels. 

Data collected include:

  • Field Parameters (pH, temperature, dissolved oxygen, etc.).
  • Bacteria (E.coli, total coliform).
  • Aquatic macroinvertebrates (a.k.a. macros or bugs) to help identify long term water quality trends.
  • Stream channel stability.

Get the data

OPTION 1: Direct Download

The following is available to download from Salt Lake County's Open Data GIS Portal:

  • Water Quality Sample Sites (point data)
  • Field Parameters (table)
  • Bacteria Samples (table)
  • Bacteria Batch (table)
  • Macros Samples (table)

The Sample Sites point data is available in three formats: shapefile, kml, or csv. Tables are available as csv. Use the common field SITEID to relate the sites to the sample data in the tables. Metadata is available separately here

OPTION 2: Data Request

The water quality data items listed above can be provided in a file geodatabase, which includes relationship classes and metadata.

Stream channel stability data is also available by request.

Please contact Sam Taylor.

Stream Water Quality Annual Report

Salt Lake County Watershed Program's annual water quality report provides a fine scale analysis of the health of County waterways. Site-specific data tracks the functionality of sub-basins and, over time, track how these ecosystems respond to management practices and restoration efforts.  

Stream Water Quality Annual Reports

Streamflow & Precipitation

The Watershed Program maintains a network of streamflow and precipitation gauges located throughout county. Daily flow data collected from many stream sites is needed to forecast floods, manage water quality, and assess water availability. In addition, stream gauge data is key to understanding the relationship between precipitation and how quickly streamflows peak.

See Real-time Streamflows & 24-hour Precipitation


Stream Water Quality Dashboard

Stream water quality data dashboard