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Pacific Southwest Research Station
800 Buchanan Street
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Albany, CA 94710-0011

(510) 559-6300
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Research Topics

Watershed & Watersheds: Turbidity Threshold Sampling

^ Main Topic | Caspar Creek Watershed Study | Fine Sediment in Pools Kings River Turbidity Threshold Sampling Study | CALFED |

Little Jones Creek Hydrologic Data:
Study Information

Location Information
"Little Jones Creek is a third-order tributary of the Middle Fork Smith River in northwestern California (41°51'N. 123°49'W.), draining about 2750 ha of steep forested terrain. About 30% of the watershed has been logged in the last 50 years. The study reach, from 1400 to 3500 m upstream of the confluence with the Middle Fork Smith River, has a nearly complete canopy of red alder (Alnus rubra). Stream gradient in the study reach averages 1.8%. About 45% of the pools in the study reach were formed by scour adjacent to large woody debris >30 cm in diameter; the rest were adjacent to bedrock outcrops. The stream averaged 8 m in width during common winter flows of about 1.5 m3 s-1. At the site where we measured discharge during this study, depth averaged about 35 cm and velocity about 45 cm-s-1 at this flow. During a bankfull flood on 16-17 January 1998, discharge rose to about 45 m3 s-1. At the site where we measured discharge, stream width reached about 11 m during the flood, while depth averaged 1.2 m and water velocities reached >2.7 m3 s-1. Water temperature ranged 5.5-11.0°C during this study (February-March 1997 and October-February 1998). Coastal cutthroat trout is the only fish species in the stream."

Excerpt from: Harvey, B.C., R.J. Nakamoto, and J.L. White. 1999. Influence of large woody debris and a bankfull flood on movement of adult resident coastal cutthroat trout (Oncorhynchus clarki) during fall and winter. Canadian Journal of Fisheries and Aquatic Sciences 56(11): 2161-2166.

Data Available
Interest in rapidly obtaining data from this location has exceeded the time required to process the raw field data and reconcile electronic measurements with field observation forms. Consequently, to make data more quickly available, we are now including not only the "finalized" processed data, but the "raw" unprocessed field data. It must be remembered that the "raw" data may contain errors that must be reconciled with field measurements before being considered "final". Once the "raw" data has been processed, it will be added to the "finalized" directory.

These files have been compressed, so you will need to download them and then use an unzipping utility to view them. Unzipping utilities like Winzip and others similar to it can be found here.

Data Format

Contact Information

Related Information and Publications

Little Jones Creek Photo Gallery
[Boom]

The boom at Little Jones Creek is constructed from aluminum square tubing and is supported with wire cables.

[77KB]

[Staff_plate]

The staff plate is used for a datum reference for the pressure transducer. Electronic records of stage are adjusted to the staff plate readings.

[66KB]

[Fish_tracking]

Fish at Little Jones Creek are tracked using radio transmitting devices.

[88KB]

[Cross_section]

Crew surveying cross-sections at low flow.

[55KB]

Research is being conducted by:
  • Cumulative Effects of Forest Mgmt on Hillslope Processes, Fishery Resources, and Downstream Environments (RWU-4351)

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    Last Modified: Aug 28, 2008 06:47:04 AM