septic systems / stream network / flood control devices / /
NaturalFeature
Deep Creek / South Mountain / Blackhead Hill / Furnace Hill / Indian Creek / Hosensack Creek / Upper Perkiomen stream / Red Hill / Perkiomen Creek / Upper Perkiomen Creek / Unami Creek / Unami Hills / Upper Perkiomen Valley / /
Organization
Philadelphia PA / Miles Pennsylvania Environmental Council / Upper Perkiomen Watershed Coalition / US Federal Reserve / /