Naylors Run
Naylors Run is a tributary of Cobbs Creek in Haverford and Upper Darby Townships, Pennsylvania, in the United States.
Naylors Run flows underground in Upper Darby from Sherbrook Boulevard to Walnut Park Drive, where it joins Cobbs Creek. Thousands of feet of Naylor's Run were channeled into underground culverts to facilitate commercial and residential development in the filled land above the pipes. Along its banks was the early-1900s Babies Hospital and National Wood Preservers, in Haverford Township, which dumped hazardous material into the ground, which eventually seeped into the creek. Though now the water quality has improved. Naylors Run joins Cobbs Creek near 63rd st and Cedar Lane.
