LH-2. Riparian-wetland areas are in properly functioning condition.
Stream channel morphology and functions are appropriate for proper functioning condition for existing climate, landform, and channel reach characteristics. Riparian-wetland areas are functioning properly when adequate vegetation, landform, or large woody debris is present to dissipate the stream energy of high-water flows.
Riparian-wetland functioning condition assessments are based on examination of hydrologic, vegetation, soil and erosion-deposition factors. BLM has developed a standard checklist to address these factors and make functional assessments. Riparian-wetland areas are functioning properly as shown by the results of applying the appropriate checklist.
The checklist for riparian areas is in Technical Reference 1737-9, Process for Assessing Proper Functioning Condition (BLM 1993d). The checklist for wetlands is in Technical Reference 1737-11, Process for Assessing Proper Functioning Condition for Lentic Riparian-Wetland Areas (BLM 1994c).
As indicated by such factors as the following:
gradient,
width/depth ratio,
channel roughness and sinuosity of stream channel,
bank stabilization,
reduced erosion,
captured sediment,
ground water recharge, and
dissipation of energy by vegetation.
Exceptions and exemptions (where applicable):
Dirt tanks, wells, and other water facilities built or placed at a location to provide water for livestock or wildlife and not determined through local planning to provide for riparian or wetland habitat are exempt.
Water impoundments permitted for construction, mining, or other similar activities are exempt.