{"site_no":"01652500","name":"Fourmile Run at Alexandria, VA","slug":"potomac-river-at-washington-dc","url":"https://streamflowdata.com/stations/potomac-river-at-washington-dc","state":"VA","county":"Arlington County","lat":38.8433333,"lng":-77.0858611,"drainage_area_sqmi":12.6,"datum_ft":27.66,"huc_code":"02070010","river":{"name":"Fourmile Run","slug":"fourmile-run-va"},"current":{"reading_time":"2026-05-30T00:50:00+00:00","discharge_cfs":3.71,"gage_height_ft":4.11},"flood_stage":{"action_stage_ft":6,"flood_stage_ft":12,"moderate_flood_ft":15,"major_flood_ft":18},"today_statistics":{"month":6,"day":11,"p10":3.6,"p25":4.1,"p50":7.5,"p75":20,"p95":111},"recent_daily_values":[{"date":"2026-05-28","discharge_cfs":6.09,"gage_height_ft":null},{"date":"2026-05-27","discharge_cfs":5.9,"gage_height_ft":null},{"date":"2026-05-26","discharge_cfs":15.8,"gage_height_ft":null},{"date":"2026-05-25","discharge_cfs":9.36,"gage_height_ft":null},{"date":"2026-05-24","discharge_cfs":129,"gage_height_ft":null},{"date":"2026-05-23","discharge_cfs":62.8,"gage_height_ft":null},{"date":"2026-05-22","discharge_cfs":61.3,"gage_height_ft":null},{"date":"2026-05-21","discharge_cfs":83.1,"gage_height_ft":null},{"date":"2026-05-20","discharge_cfs":20.5,"gage_height_ft":null},{"date":"2026-05-19","discharge_cfs":3.3,"gage_height_ft":null},{"date":"2026-05-18","discharge_cfs":3.05,"gage_height_ft":null},{"date":"2026-05-17","discharge_cfs":3.11,"gage_height_ft":null},{"date":"2026-05-16","discharge_cfs":3.29,"gage_height_ft":null},{"date":"2026-05-15","discharge_cfs":3.61,"gage_height_ft":null},{"date":"2026-04-21","discharge_cfs":4.26,"gage_height_ft":null},{"date":"2026-04-20","discharge_cfs":4.45,"gage_height_ft":null},{"date":"2026-04-19","discharge_cfs":8.02,"gage_height_ft":null},{"date":"2026-04-18","discharge_cfs":4.51,"gage_height_ft":null},{"date":"2026-04-17","discharge_cfs":4.47,"gage_height_ft":null},{"date":"2026-04-16","discharge_cfs":4.55,"gage_height_ft":null},{"date":"2026-04-15","discharge_cfs":4.58,"gage_height_ft":null},{"date":"2026-04-14","discharge_cfs":4.75,"gage_height_ft":null},{"date":"2026-04-13","discharge_cfs":5.05,"gage_height_ft":null},{"date":"2026-04-12","discharge_cfs":4.59,"gage_height_ft":null},{"date":"2026-04-11","discharge_cfs":4.6,"gage_height_ft":null},{"date":"2026-04-10","discharge_cfs":5.04,"gage_height_ft":null},{"date":"2026-04-09","discharge_cfs":4.76,"gage_height_ft":null},{"date":"2026-04-08","discharge_cfs":5.05,"gage_height_ft":null},{"date":"2026-04-07","discharge_cfs":5.31,"gage_height_ft":null},{"date":"2026-04-06","discharge_cfs":7.3,"gage_height_ft":null},{"date":"2026-04-05","discharge_cfs":91.3,"gage_height_ft":null},{"date":"2026-04-04","discharge_cfs":5.01,"gage_height_ft":null},{"date":"2026-04-03","discharge_cfs":5.34,"gage_height_ft":null},{"date":"2026-04-02","discharge_cfs":6.28,"gage_height_ft":null},{"date":"2026-04-01","discharge_cfs":15.4,"gage_height_ft":null},{"date":"2026-03-31","discharge_cfs":5.79,"gage_height_ft":null},{"date":"2026-03-30","discharge_cfs":5.46,"gage_height_ft":null},{"date":"2026-03-29","discharge_cfs":4.97,"gage_height_ft":null},{"date":"2026-03-28","discharge_cfs":6.02,"gage_height_ft":null},{"date":"2026-03-27","discharge_cfs":8.53,"gage_height_ft":null},{"date":"2026-03-26","discharge_cfs":5.84,"gage_height_ft":null},{"date":"2026-03-25","discharge_cfs":6.55,"gage_height_ft":null},{"date":"2026-03-24","discharge_cfs":6.34,"gage_height_ft":null},{"date":"2026-03-23","discharge_cfs":8.42,"gage_height_ft":null},{"date":"2026-03-22","discharge_cfs":6.95,"gage_height_ft":null},{"date":"2026-03-21","discharge_cfs":44.1,"gage_height_ft":null},{"date":"2026-03-20","discharge_cfs":7.61,"gage_height_ft":null},{"date":"2026-03-19","discharge_cfs":7.14,"gage_height_ft":null},{"date":"2026-03-18","discharge_cfs":8.33,"gage_height_ft":null},{"date":"2026-03-17","discharge_cfs":28.4,"gage_height_ft":null},{"date":"2026-03-16","discharge_cfs":132,"gage_height_ft":null},{"date":"2026-03-15","discharge_cfs":5.71,"gage_height_ft":null},{"date":"2026-03-14","discharge_cfs":6.84,"gage_height_ft":null},{"date":"2026-03-13","discharge_cfs":10.4,"gage_height_ft":null},{"date":"2026-03-12","discharge_cfs":68.4,"gage_height_ft":null},{"date":"2026-03-11","discharge_cfs":5.41,"gage_height_ft":null},{"date":"2026-03-10","discharge_cfs":5.35,"gage_height_ft":null},{"date":"2026-03-09","discharge_cfs":5.68,"gage_height_ft":null},{"date":"2026-03-08","discharge_cfs":6.04,"gage_height_ft":null},{"date":"2026-03-07","discharge_cfs":6.28,"gage_height_ft":null}],"sources":{"usgs_nwis":"https://waterdata.usgs.gov/nwis","noaa_nwps":"https://api.water.noaa.gov/nwps/v1"},"license":"USGS data is in the public domain. Attribution: USGS National Water Information System (NWIS)."}