Fresno Metropolitan Flood Control District

Post-Development Standards Technical Manual

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FMFCD June 2014 Post-Development Standards Technical Manual (URL updated to 2022/09 hosting path). Covers Fresno-Clovis priority projects outside regional basin service areas; regional basin discharges credited as meeting LID/treatment. Pipeline excerpt repair removed 2 unlocated citation(s).

Fields not found in document: design_criteria.required_hydrologic_hydraulic_software, document_metadata.version_or_edition, document_metadata.last_revised_date

Other manuals in California: Alameda Countywide Clean Water Program (ACCWP) / City of Fremont, California, California Department of Transportation (Caltrans), California Department of Transportation (Caltrans), City of Anaheim, City of Bakersfield, City of Chula Vista, City of Long Beach, City of Oakland, City of Sacramento, City of San Diego, City of San Francisco, City of San Jose / Santa Clara Valley (SCVURPPP), City of Santa Barbara, City of Santa Rosa, City of Stockton / San Joaquin County, County of Los Angeles, County of Orange, Riverside County, San Bernardino County, Tahoe Regional Planning Agency (Lake Tahoe Region)

Document Metadata

Jurisdiction level

Special District

“Fresno Metropolitan Flood Control District”
Title

State

California

“2013 MS4 Permit”
Section 1.1

Version / edition

Not found in document

No evidence cited

Adoption / effective date

2014-06

“FMFCD has prepared the 2014 Post-Development Standards Technical Manual”
Section 1.1

Last revised date

Not found in document

No evidence cited

Relationship to state manual

independent

“comply with the requirements of the 2013 MS4 Permit”
Section 1.1

Design Criteria

Design storm return periods (years)

100-year

“difference in stormwater runoff volume between the pre- and post-development 100-”
Section 5.3

Water quality volume method

Priority Projects must mitigate SWQDV or SWQDF via LID- or treatment-based BMPs. SWQDV: infiltrate or treat runoff from the 24-hour 85th percentile storm (local rainfall record), or WEF/ASCE maximized capture volume, or volume of annual runoff achieving equivalent treatment to the 85th percentile 24-hour event. County of Fresno drainage standards (pre- vs post-development 100-year runoff volume difference) are noted as more stringent than the 2013 MS4 Permit for areas not covered by the FMFCD Master Plan. Projects discharging to the Regional Stormwater Management Basin System meet LID/treatment requirements via the regional system.

“The volume of stormwater runoff produced from a 24-hour, 85th percentile storm event, as determined from the local historical rainfall record”
Section 5.4

Peak flow calculation method(s)

SWQDF for flow-based BMPs (vegetated filter strips, vegetated swales, some proprietary devices), Effective stormwater runoff coefficient from Tables 5-2 (Fresno) and 5-3 (Clovis), County of Fresno drainage design: mitigate difference in pre- vs post-development 100-year runoff volume where Master Plan basins do not apply

“Vegetated Filter Strips (T-4) SWQDF / Vegetated Swales (T-5) SWQDF”
Table 5-1

Hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Bioretention (LID-1), Infiltration basin (LID-2), Infiltration trench (LID-3), Dry well (LID-4), Permeable pavement without underdrain (LID-5), Rain barrel/cistern (LID-6), Green roof (LID-7), Biofiltration (T-1), Stormwater planter (T-2), Tree-well filter (T-3), Vegetated filter strips (T-4), Vegetated swales (T-5), Sand filters (T-6), Constructed wetlands (T-7), Extended detention basin (T-8), Wet pond (T-9), Permeable pavement with underdrain (T-10), Proprietary devices (T-11), Source control BMPs

“Bioretention (LID-1) SWQDV / Infiltration Basin (LID-2) SWQDV”
Table 5-1