"Cross Canal Brook at Harvest Rd culvert. Sudden thunderstorms in area. Martha Brown Detention Pond outlet level above PVC inlets and 8" from top overflow. Flooding would have been much worse had large log (>6" diameter 8' long) swept from woods, lodged inside culvert and trapped more debris, rather than getting stuck outside between the two culvert pipes. Precip rate in watershed greatly varied, from peak 2.22 in/hr to over 4 in/hr."