{"site_no":"01638500","name":"Potomac River at Point Of Rocks, MD","slug":"potomac-river-at-point-of-rocks-md","url":"https://streamflowdata.com/stations/potomac-river-at-point-of-rocks-md","state":"MD","county":"Frederick County","lat":39.2735833,"lng":-77.5431111,"drainage_area_sqmi":9651,"datum_ft":199.91,"huc_code":"02070008","river":{"name":"Potomac River","slug":"potomac-river"},"current":{"reading_time":"2026-05-29T23:55:00+00:00","discharge_cfs":34600,"gage_height_ft":8.37},"flood_stage":{"action_stage_ft":11,"flood_stage_ft":16,"moderate_flood_ft":20,"major_flood_ft":27},"today_statistics":{"month":6,"day":11,"p10":2900,"p25":3860,"p50":6110,"p75":8620,"p95":19600},"recent_daily_values":[{"date":"2026-05-28","discharge_cfs":29600,"gage_height_ft":null},{"date":"2026-05-27","discharge_cfs":24800,"gage_height_ft":null},{"date":"2026-05-26","discharge_cfs":26000,"gage_height_ft":null},{"date":"2026-05-25","discharge_cfs":32400,"gage_height_ft":null},{"date":"2026-05-24","discharge_cfs":28000,"gage_height_ft":null},{"date":"2026-05-23","discharge_cfs":5960,"gage_height_ft":null},{"date":"2026-05-22","discharge_cfs":3400,"gage_height_ft":null},{"date":"2026-05-21","discharge_cfs":2610,"gage_height_ft":null},{"date":"2026-05-20","discharge_cfs":2580,"gage_height_ft":null},{"date":"2026-05-19","discharge_cfs":2520,"gage_height_ft":null},{"date":"2026-05-18","discharge_cfs":2580,"gage_height_ft":null},{"date":"2026-05-17","discharge_cfs":2690,"gage_height_ft":null},{"date":"2026-05-16","discharge_cfs":2720,"gage_height_ft":null},{"date":"2026-05-15","discharge_cfs":2630,"gage_height_ft":null},{"date":"2026-04-21","discharge_cfs":3810,"gage_height_ft":null},{"date":"2026-04-20","discharge_cfs":3790,"gage_height_ft":null},{"date":"2026-04-19","discharge_cfs":3880,"gage_height_ft":null},{"date":"2026-04-18","discharge_cfs":3930,"gage_height_ft":null},{"date":"2026-04-17","discharge_cfs":4180,"gage_height_ft":null},{"date":"2026-04-16","discharge_cfs":4270,"gage_height_ft":null},{"date":"2026-04-15","discharge_cfs":4490,"gage_height_ft":null},{"date":"2026-04-14","discharge_cfs":4570,"gage_height_ft":null},{"date":"2026-04-13","discharge_cfs":4840,"gage_height_ft":null},{"date":"2026-04-12","discharge_cfs":5080,"gage_height_ft":null},{"date":"2026-04-11","discharge_cfs":5430,"gage_height_ft":null},{"date":"2026-04-10","discharge_cfs":5800,"gage_height_ft":null},{"date":"2026-04-09","discharge_cfs":6140,"gage_height_ft":null},{"date":"2026-04-08","discharge_cfs":6760,"gage_height_ft":null},{"date":"2026-04-07","discharge_cfs":6900,"gage_height_ft":null},{"date":"2026-04-06","discharge_cfs":6370,"gage_height_ft":null},{"date":"2026-04-05","discharge_cfs":6210,"gage_height_ft":null},{"date":"2026-04-04","discharge_cfs":6400,"gage_height_ft":null},{"date":"2026-04-03","discharge_cfs":6620,"gage_height_ft":null},{"date":"2026-04-02","discharge_cfs":6770,"gage_height_ft":null},{"date":"2026-04-01","discharge_cfs":7090,"gage_height_ft":null},{"date":"2026-03-31","discharge_cfs":7590,"gage_height_ft":null},{"date":"2026-03-30","discharge_cfs":8340,"gage_height_ft":null},{"date":"2026-03-29","discharge_cfs":8130,"gage_height_ft":null},{"date":"2026-03-28","discharge_cfs":7320,"gage_height_ft":null},{"date":"2026-03-27","discharge_cfs":7340,"gage_height_ft":null},{"date":"2026-03-26","discharge_cfs":7770,"gage_height_ft":null},{"date":"2026-03-25","discharge_cfs":8080,"gage_height_ft":null},{"date":"2026-03-24","discharge_cfs":8280,"gage_height_ft":null},{"date":"2026-03-23","discharge_cfs":8680,"gage_height_ft":null},{"date":"2026-03-22","discharge_cfs":9170,"gage_height_ft":null},{"date":"2026-03-21","discharge_cfs":9750,"gage_height_ft":null},{"date":"2026-03-20","discharge_cfs":10500,"gage_height_ft":null},{"date":"2026-03-19","discharge_cfs":11200,"gage_height_ft":null},{"date":"2026-03-18","discharge_cfs":10700,"gage_height_ft":null},{"date":"2026-03-17","discharge_cfs":10000,"gage_height_ft":null},{"date":"2026-03-16","discharge_cfs":9210,"gage_height_ft":null},{"date":"2026-03-15","discharge_cfs":9940,"gage_height_ft":null},{"date":"2026-03-14","discharge_cfs":10700,"gage_height_ft":null},{"date":"2026-03-13","discharge_cfs":10700,"gage_height_ft":null},{"date":"2026-03-12","discharge_cfs":11000,"gage_height_ft":null},{"date":"2026-03-11","discharge_cfs":12500,"gage_height_ft":null},{"date":"2026-03-10","discharge_cfs":14600,"gage_height_ft":null},{"date":"2026-03-09","discharge_cfs":16800,"gage_height_ft":null},{"date":"2026-03-08","discharge_cfs":17300,"gage_height_ft":null},{"date":"2026-03-07","discharge_cfs":12300,"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)."}