I really enjoyed seeing all of the Day 1 toots and data viz! For Day 2, I’m getting out of my comfort zone to explore hydrological data. The map shows streams and reaches from the USGS National Hydrography Dataset (Hydrological Unit 8) in the upper Potomac River Watershed.

#30DayMapChallenge #Day2 #USGS #DMV #map #ArcPro #HUC #HUC8 #NHD #NationalHydrographyDataset #PotomacRiver