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Fathom Flood Hazard Extent 1% AEP (100-yr)

Virginia Department of Conservation and Recreation

Updated Oct 19, 2026

About this dataset

<p><span style='background-color:rgb(255,255,255); color:rgb(74,74,74); font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'><span style='display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:left; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'>Fathom is a 3rd party flood hazard data provider with a comprehensive dataset of flood hazards including coastal, fluvial, and pluvial flooding. This layer represent a combined floodplain with the three major sources of flooding combined into one extent. Non-regulatory flood hazard extent based on Fathom 10-meter depth grid for baseline (2020). &nbsp;Public layers include the 1% and 0.2% Annual Exceedance Probability.</span></span></p>

Data and resources (6)

Prototype by Datopian · not an official government website · data from data.virginia.gov