{"site_no":"05540275","name":"Spring Brook at 87th Street Near Naperville, IL","slug":"spring-brook-at-87th-street-near-naperville-il","url":"https://streamflowdata.com/stations/spring-brook-at-87th-street-near-naperville-il","state":"IL","county":"DuPage County","lat":41.7258972,"lng":-88.1631611,"drainage_area_sqmi":9.9,"datum_ft":646.43,"huc_code":"07120004","river":{"name":"Spring Brook","slug":"spring-brook-il"},"current":{"reading_time":"2026-05-29T23:45:00+00:00","discharge_cfs":3.59,"gage_height_ft":2.66},"flood_stage":{"action_stage_ft":5.5,"flood_stage_ft":null,"moderate_flood_ft":null,"major_flood_ft":null},"today_statistics":{"month":6,"day":11,"p10":0.48,"p25":2.5,"p50":6.4,"p75":16,"p95":60},"recent_daily_values":[{"date":"2026-05-28","discharge_cfs":3.89,"gage_height_ft":2.68},{"date":"2026-05-27","discharge_cfs":4.43,"gage_height_ft":2.72},{"date":"2026-05-26","discharge_cfs":5.67,"gage_height_ft":2.79},{"date":"2026-05-25","discharge_cfs":7.1,"gage_height_ft":2.86},{"date":"2026-05-24","discharge_cfs":5.47,"gage_height_ft":2.77},{"date":"2026-05-23","discharge_cfs":3.75,"gage_height_ft":2.67},{"date":"2026-05-22","discharge_cfs":4.24,"gage_height_ft":2.71},{"date":"2026-05-21","discharge_cfs":4.35,"gage_height_ft":2.71},{"date":"2026-05-20","discharge_cfs":4.65,"gage_height_ft":2.73},{"date":"2026-05-19","discharge_cfs":5.3,"gage_height_ft":2.77},{"date":"2026-05-18","discharge_cfs":4.15,"gage_height_ft":2.7},{"date":"2026-05-17","discharge_cfs":3.63,"gage_height_ft":2.66},{"date":"2026-05-16","discharge_cfs":3.78,"gage_height_ft":2.67},{"date":"2026-05-15","discharge_cfs":3.89,"gage_height_ft":2.68},{"date":"2026-04-20","discharge_cfs":21.7,"gage_height_ft":3.48},{"date":"2026-04-19","discharge_cfs":28.5,"gage_height_ft":3.76},{"date":"2026-04-18","discharge_cfs":45.2,"gage_height_ft":4.3},{"date":"2026-04-17","discharge_cfs":15.2,"gage_height_ft":3.17},{"date":"2026-04-16","discharge_cfs":18.3,"gage_height_ft":3.33},{"date":"2026-04-15","discharge_cfs":15.4,"gage_height_ft":3.19},{"date":"2026-04-14","discharge_cfs":16.4,"gage_height_ft":3.24},{"date":"2026-04-13","discharge_cfs":19.1,"gage_height_ft":3.37},{"date":"2026-04-12","discharge_cfs":17.5,"gage_height_ft":3.29},{"date":"2026-04-11","discharge_cfs":18,"gage_height_ft":3.32},{"date":"2026-04-10","discharge_cfs":22.4,"gage_height_ft":3.51},{"date":"2026-04-09","discharge_cfs":20.2,"gage_height_ft":3.42},{"date":"2026-04-08","discharge_cfs":23.3,"gage_height_ft":3.55},{"date":"2026-04-07","discharge_cfs":26.7,"gage_height_ft":3.69},{"date":"2026-04-06","discharge_cfs":33,"gage_height_ft":3.92},{"date":"2026-04-05","discharge_cfs":47.6,"gage_height_ft":4.37},{"date":"2026-04-04","discharge_cfs":77.9,"gage_height_ft":4.89},{"date":"2026-04-03","discharge_cfs":88.6,"gage_height_ft":5.02},{"date":"2026-04-02","discharge_cfs":58,"gage_height_ft":4.54},{"date":"2026-04-01","discharge_cfs":23.9,"gage_height_ft":3.58},{"date":"2026-03-31","discharge_cfs":31.1,"gage_height_ft":3.86},{"date":"2026-03-30","discharge_cfs":19.7,"gage_height_ft":3.39},{"date":"2026-03-29","discharge_cfs":20.9,"gage_height_ft":3.45},{"date":"2026-03-28","discharge_cfs":23.4,"gage_height_ft":3.56},{"date":"2026-03-27","discharge_cfs":34.3,"gage_height_ft":3.95},{"date":"2026-03-26","discharge_cfs":18.6,"gage_height_ft":3.29},{"date":"2026-03-25","discharge_cfs":14.6,"gage_height_ft":3.15},{"date":"2026-03-24","discharge_cfs":17.2,"gage_height_ft":3.27},{"date":"2026-03-23","discharge_cfs":18.7,"gage_height_ft":3.35},{"date":"2026-03-22","discharge_cfs":20.4,"gage_height_ft":3.43},{"date":"2026-03-21","discharge_cfs":22.2,"gage_height_ft":3.5},{"date":"2026-03-20","discharge_cfs":25.7,"gage_height_ft":3.65},{"date":"2026-03-19","discharge_cfs":31.4,"gage_height_ft":3.87},{"date":"2026-03-18","discharge_cfs":39.1,"gage_height_ft":4.13},{"date":"2026-03-17","discharge_cfs":65.3,"gage_height_ft":4.7},{"date":"2026-03-16","discharge_cfs":151,"gage_height_ft":5.71},{"date":"2026-03-15","discharge_cfs":40.7,"gage_height_ft":3.85},{"date":"2026-03-14","discharge_cfs":20.3,"gage_height_ft":3.42},{"date":"2026-03-13","discharge_cfs":26.7,"gage_height_ft":3.68},{"date":"2026-03-12","discharge_cfs":33.7,"gage_height_ft":3.95},{"date":"2026-03-11","discharge_cfs":53.4,"gage_height_ft":4.48},{"date":"2026-03-10","discharge_cfs":6.49,"gage_height_ft":3.03},{"date":"2026-03-09","discharge_cfs":5.04,"gage_height_ft":2.98},{"date":"2026-03-08","discharge_cfs":6.21,"gage_height_ft":3.04},{"date":"2026-03-07","discharge_cfs":7.8,"gage_height_ft":3.13},{"date":"2026-03-06","discharge_cfs":2.6,"gage_height_ft":2.73}],"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)."}