{"overlays":{"type":"FeatureCollection","features":[]},"reaches":{"type":"FeatureCollection","features":[]},"outfalls":{"ops":[["il-markham-csos-city-of","City of Markham (Markham CSOS)"]],"ws":[],"rw":["Calumet Union Drainage Ditch","CALUMET UNION DRAINAGE CANAL, SUBURBAN CHICAGO AREAS"],"rn":[{"s":"likely","l":["Radar rainfall, last 24 hours: 2.6 in (to Nov 6, 2026, 2:00 AM CST)","Threshold: 0.1 in/24 h (site default)"],"c":"Source: NOAA National Weather Service, MRMS radar-only rainfall estimate, valid Nov 6, 2026, 2:00 AM CST, retrieved 2026-11-06 08:57 UTC; threshold: site default; rule: How it works, discharge likely or possible.","p":1}],"sr":["Source: EPA and state outfall records.","Source: EPA permit records (ICIS-NPDES permitted features)."],"o":[[-87.66555,41.597,0,0,"ILM580028","001",0,-1,0,0,0,0],[-87.66315,41.59724,1,0,"ILM580028","",1,-1,132,-1,1,0]]}}