Virginia Regulatory Town Hall
Department of Conservation and Recreation
Guidance Document Information
Title Guidance Document on New Probable Maximum Precipitation (PMP) Implementation
Document ID DCR-VSWCB-037
Summary This guidance document specifies the decision process to be utilized by impounding structure owners and their engineers in determining when a dam break inundation zone map, emergency action/ emergency preparedness plan, and hazard potential classification need to be updated to reflect Virginia’s new Probable Maximum Precipitation (PMP) values that became effective on March 23, 2016.
Effective Date 3/29/2018
pdf View document text     Posted On 4/11/2018                 Document on Town Hall
Explanation or Citations Chapters 475 and 489 of the 2014 Virginia Acts of Assembly; 4VAC50-20-50, titled Performance standards required for impounding structures, incorporated by reference the Probable Maximum Study for Virginia (and associated PMP Evaluation Tool and Database) (November 2015)

This document applies to all chapters for the following boards
[4 VAC 50] Virginia Soil and Water Conservation Board

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