Land Area by Zoning

Ever wonder how much land area there is in DC by zoning district or specific zone? Well, wonder no more, as we sliced and diced the data, and created the DC Land Area Explorer by Zoning Type. This application leverages Esri‘s new select by chart category functionality in operations dashboard. Data is kindly provided by our friends at DC Office of Zoning (DCOZ),  the Department of Consumer and Regulatory Affairs (DCRA), and a fabulous basemap by OCTO’s DCGIS team.

Users can select zoning categories or specific zones by clicking on the bars in the charts. This will update the total recorded land area calculation to just the selected zone(s). Alternatively, for really detailed analysis, zooming into the map and using the “select” tool in the map window allows the selection by zoning district, specific zone, or even property boundaries.

Take a look at the DC Land Area Explorer by Zoning Type, and if you have data you’d like sliced, diced, sauteed or… you know who to contact!

Stormwater BMPs in DC

Did you know that when heavy rain falls in an urban environment, most of it will run off the roads and buildings into concrete channels and quickly dump into streams and rivers? This “stormwater” can be very damaging, as all the water enters into the streams at virtually the same time, so channel erosion and water quality are serious concerns. In natural environments, the water is slowed down and filtered by things like trees, wetlands, soaking into the ground and moving through the landscape.

To help mimic the function of the natural environment, urban planners and municipal engineers construct stormwater “Best Management Practices” (or BMPs) to help filter and slow down the water on its way to the nearest stream. Stormwater BMPs may include structures such as reservoirs, green roofs, permeable pavement, filtering ponds, or rainwater harvesting among others.

Keeping track of all those stormwater BMP assets is a challenge, so SymGEO has built the DC Stormwater BMP Manager to help. This configurable application uses an ArcGIS Online Operations Dashboard template, and shows a select set of data attributes to display the characteristics and capabilities of local stormwater BMPs.

The data is coming directly from DC OCTO / DCGIS data servers, shared through Open Data DC. This powers the application with the authoritative data sets, and any updates to the data are immediately reflected in the manager dashboard. All statistics are calculated based on the stormwater BMPs within the view window, allowing interactive explorations around the city.

If only a certain subset of data is to be investigated (say by BMP type, or by green vs gray infrastructure), a left-hand panel can be opened to filter the data. All statistics and the map window are linked to those filters, and additional data about each BMP can be accessed by clicking on the BMP feature.

Give the DC Stormwater BMP Manager a spin, and imagine the possibilities using your own data. Contact us for more information on how to effectively display and share your digital assets!