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Key components of LID BMPs that should be the subject of sediment accumulation testing (i.e., depth measurements) are described in the table below along with recommended test methods. Depth measurements should be recorded on inspection field data forms provided on each associated [[Inspection and maintenance#Practice-specific Inspection and Maintenance|BMP's I&M page on the wiki]], used to determine if sediment removal maintenance is needed.

Key components of LID BMPs that should be the subject of sediment accumulation testing (i.e., depth measurements) are described in the table below along with recommended test methods. Depth measurements should be recorded on inspection field data forms provided on each associated [[Inspection and maintenance#Practice-specific Inspection and Maintenance|BMP's I&M page on the wiki]], used to determine if sediment removal maintenance is needed.

[[File:Two prong method catchbasin sediment acc..PNG|thumb|320px|Measuring sediment depth in a catchbasin utilizing the "two prong method" (Photo Source: King

[[File:Secch idisk.PNG|thumb|320px|Picture of a typical Secchi disk to help measure sediment depth in underground holding structures. (Photo Source: Wildco, 2018<ref>Wildco. 2018. Secchi Disk Kit, Fieldmaster®. Accesses May 5 2022: https://shop.sciencefirst.com/wildco/student-water-samplers/5979-fieldmaster-student-secchi-disk-non-calibrated-line-for-student-use-only-200mm.html</ref>]]

County, 2010)<ref>King County. 2010. Tips for Successful Drainage Facility Self-Inspection. Department of Natural Resources and Parks. File Name: 0906_DrainTIPS.indd lpre. Developed: June, 2010. https://www.seatacwa.gov/home/showpublisheddocument/31441/637662770980630000</ref>]]

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|+'''Key components and test methods for sediment accumulation testing by BMP type'''

|+'''Key components and test methods for sediment accumulation testing by BMP type'''