Spreadsheet: 225bb100-6141-4f4e-97af-02059bfc579b
Sheet: FloodplainManagement FS

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 |  |  |  | United States Department of Agriculture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Guide Sheet |  |  | FS1 | FS-2
 |  |  |  | Special Environmental Concerns |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Return to NRCS-CPA-52 |  |  |  | ●Clean Water Act / Waters of the U.S.
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 | FLOODPLAIN MANAGEMENT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Guide Sheet |  |  | Fact Sheet
 | Executive Order (EO) 11988, Floodplain Management, was signed by President [NAME] on May 24, 1977.  NRCS policy on floodplains (190-GM, Part 410, Subpart B, Section 410.25) reflects the requirement of the EO that decisions by Federal agencies must recognize that floodplains have unique and significant public values. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Coral Reefs
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 | What is it? |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ●Endangered and Threatened Species
 | [NAME] are defined as lowlands or relatively flat areas adjoining inland or coastal waters, including at a minimum areas subject to a chance of flooding of 1 percent or greater in any given year.  The base floodplain is set equal to the 100-year floodplain (the 1-percent chance floodplain) . The critical action floodplain is defined as the 500-year floodplain (the 0.2-percent chance floodplain) where certain facilities are present, such as a school, hospital, nursing home, utility, or a facility producing volatile,  toxic, or water-reactive materials.  [NAME] may be shown on maps produced by the Federal Emergency Management Agency (FEMA) and on NRCS watershed plans and floodplain management studies.  Since alluvial soils are deposited by flood waters, NRCS Soil Survey information can also be useful to help identify potential floodplains with a flooding chance of 1-percent or greater in areas where FEMA floodplain maps are not available.  [NAME] normally are adjacent to a defined stream channel and have soils interpretations of Flood Frequency classes from "Rare" to "Very Frequent".  The hydrologic function of floodplains depends on periodic flooding, or on high groundwater conditions provided by high stream discharges.  The “Rare” frequency class represents the range of the 100-year to 20-year floodplain (1 to 5 percent chance floodplain). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Guide Sheet |  |  | Fact Sheet
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Prime and [NAME]
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 | Why is it important? |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Riparian Area
 | The objectives of E.O. 11988 are to avoid, to the extent possible, the long- and short-term adverse impacts associated with occupancy and modification of floodplains and to avoid direct and indirect support of floodplain development where there is a practical alternative. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Guide Sheet |  |  | Fact Sheet
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | [NAME]
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ●Wetlands
 | What is required? |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Guide Sheet |  |  | Fact Sheet
 | Through proper planning, floodplains can be managed to reduce the threat to human life, health and property in ways that are environmentally sensitive.  Most floodplains contain areas with valuable assets that sustain and enhance human existence.  Some of these assets are agricultural and forest, food and fiber, fish and wildlife, temporary floodwater storage, parks and recreation, and environmental values. NRCS provides leadership and takes actions where practicable to conserve, preserve, and restore existing natural and beneficial functions and values in base (100-year) floodplains as part of the technical and financial assistance program that it administers. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ●Wild and Scenic Rivers
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Return to start of NRCS-CPA-52
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Go to start of Form Instructions
 | Floodplain Management at a Glance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Go to Resource Considerations Guide Sheet | Instructions!A30 | 'ResourceConsiderations-optional'!A1
 | Problems/Indicators – Potential negative impacts to [NAME] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 'ResourceConsiderations-optional'!A1 | 'ResourceConsiderations-optional'!A1 | 'ResourceConsiderations-optional'!A1
 | Potential Causes |  |  |  |  |  |  |  |  | Potential Solutions
 | • Land use changes/conversions in floodplain |  |  |  |  |  |  |  |  | • Consult HUD/FEMA flood insurance maps and/or other available floodplain data
 | [NAME]-disturbing project within floodplain
 | • Infrastructure development in floodplain |  |  |  |  |  |  |  |  | • Mitigation to eliminate potential impacts during planning process
 | • Activities requiring a NPDES permit
 | • Construction of flood walls, dikes, etc., for purpose of flood control |  |  |  |  |  |  |  |  | • Consultation with NOAA-NMFS and USFWS, as needed (EFH, ESA)
 |  |  |  |  |  |  |  |  |  | • Incorporate conservation/mitigation measures into project specifications, as needed |  |  |  |  |  |  |  |  |  | Return to NRCS-CPA-52
 |  |  |  |  |  |  |  |  |  | • Establish monitoring protocols