Arid Southwest BMP 49

Fiberschines/Biologs POLLUTANTS ADDRESSED: Nutrients and Organics, Sediments, Salinity

DESCRIPTION: The material used is a coconut-fiber roll product (fiberschine) used to stabilize the stream bank at the base of the slope. Plant cuttings are planting into thefiberschine and just behind it as well. When the fiberschine decomposes, plants will have rooted, stabilizing the stream bank. LOAD REDUCTION MECHANISM:

Nutrients/Organics Management - Vegetation planted in the fiberschine will take up nutrients from the water. Salinity Reduction - Plant s will also absorb dissolved salts. Sediment Reduction - Vegetation roots will stabilize stream bank.

LAND USE CLASSIFICATION: Disturbed areas Agricultural lands Grazing lands ADDITIONAL BENEFITS: Growing riparian vegetation will provide streambank stability and habitat for wildlife.

POTENTIAL TREATMENT AREAS Streamsides ALTERNATIVE MANAGEMENT MEASURES: Brush Layer Brush Mattress Brush Trench Pole Plantings Willow Fascines PERMITTING REQUIREMENTS: None if installed by hand. Contact county regional flood control district.

Arid Southwest BMP 50

Fiberschines/Biologs POLLUTANTS ADDRESSED: Nutrients and Organics, Sediments, Salinity

Level 300: MILD ENGINEERING LOAD REDUCTION POTENTIAL:

LOW MEDIUM HIGH ESTIMATED TIME FOR LOAD REDUCTION:

IMMEDIATE MONTHS- > 2 YEARS 2 YEARS EXPECTED MAINTENANCE:

LOW MEDIUM HIGH ESTIMATED COST:

LOW MEDIUM HIGH PLANNING AND IMPLEMENTATION:

1. Installation of the fiberschine can usually be accomplished throughout the year. High water periods should be avoided for safety reasons.

2. The fiberschine should extend upstream and

downstream past the eroded area being treated to prevent flows from getting behind the fiberschine.

3. Analysis and calculations may reveal that

additional toe protection is necessary. In many cases, rock may be appropriate if placed properly. Improperly placed rock can result in erosion problems on the opposite streambank as well as downstream.

4. Be sure to key the upstream and downstream

end of the fiberschine into the streambank and secure it with some hard materials such as tree trunks or large rocks.

5. If this method is used in a highly erodible area

and bank shaping is not possible, a tiered fiberschine technique may be necessary. Three fiberschines of different diameters are often used but various numbers and combinations of sizes can be used.

6. Never disturb the site unnecessarily. Remember

the goal is to stabilize a site. The less it is disturbed the easier it will be to restore.

Riparian Planting Zone: Toe and Bank Zones.