|
Lower Gallatin TPA Sediment
Page history
last edited
by Christina Staten 10 years, 6 months ago
LOWER GALLATIN TMDL PLANNING AREA home
NUTRIENTS SEDIMENT E.COLI OUTREACH
SEDIMENT
Sediment is a naturally occurring component of healthy and stable stream systems. Excessive sediment entering streams, however, can upset the balance between naturally-occurring sediment transport and deposition, altering channel form and function, and may adversely impact fish and other aquatic life through a variety of mechanisms that may relate to: loss of habitat, warmer water temperatures, higher turbidity, and other stressors brought on by excessive sediment levels.
Map 4.1 Sediment-Impaired Streams (in RED) in the Lower Gallatin TMDL Planning Area
In order to evaluate water quality conditions in support of sediment TMDL development in the Lower Gallatin TPA, DEQ conducted sediment and habitat assessments on sediment-impaired streams during the summer of 2009, following the DEQ's Field Methodology for the Assessment of TMDL Sediment and Habitat Impairments. Sediment and habitat assessments were performed at 23 monitoring sites chosen using the results of aerial assessment and field reconnaissance. Sediment and habitat assessments in 2009 evaluated existing in-stream conditions and assessed sediment loads from eroding streambanks.
In addition to sediment and habitat field assessments, sediment contributions to impaied streams from upland areas and from paved and unpaved roads in the TPA were also assessed. Table 4.1 below provides an annotated list of downloadable documents, data, and reports related to sediment assessments in the Lower Gallatin TMDL Planning Area.
|
CONTACT INFORMATION
Click on the Adobe icon if you need to download the free Adobe Acrobat software.
Lower Gallatin TPA Sediment
|
Tip: To turn text into a link, highlight the text, then click on a page or file from the list above.
|
|
|