Tidal Shoreline Flood Hazard Area by US Government | Environmental and Climate Sciences

About this Dataset

Tidal Shoreline Flood Hazard Area

The tidal shoreline buffer includes the areas along the banks of the Potomac and Anacostia Rivers that are projected to be inundated by tides on a daily basis by 2080. These areas are regulated under the DC Flood Hazard Rules. To calculate this area, DOEE used 3.4 feet as the expected amount of relative sea level rise between 2000 and 2080 which is the Intermediate-High Projection in 2080 from the 2022 NOAA Sea Level Rise Technical Report. 3.4 feet is added to 2.0 feet NAVD88 (which is mean higher high water in the year 2000) to arrive at the 5.4 foot NAVD88 elevation that sets the extent of the tidal shoreline buffer. Additional details and diagrams in presentation slides 5, 32-36:

https://doee.dc.gov/sites/default/files/dc/sites/doee/publication/attachments/Flood%20Regulation%20Updates%202024-08-01%20Info%20Presentation.pdf
Organization: District of Columbia
Last updated: 2025-05-28T02:41:14.330842
Tags: district-of-columbia, doee, flood-hazard, flood-hazard-rules, floodplain, washington-dc

Tables

Table 1

@usgov.district_of_columbia_tidal_shoreline_flood_hazard_area.table_1

8.24 KB
6 rows
11 columns


CREATE TABLE table_1 (
  "objectid" BIGINT,
  "name" VARCHAR,
  "gis_id" VARCHAR,
  "se_anno_cad_data" VARCHAR,
  "globalid" VARCHAR,
  "created_user" VARCHAR,
  "created_date" VARCHAR,
  "last_edited_user" VARCHAR,
  "last_edited_date" VARCHAR,
  "shapearea" BIGINT,
  "shapelen" BIGINT
);