... Philadelphia Philadelphia parks have support galore In fact, there are more than 100 “friends of parks” organizations Two of them, the Philadelphia Parks Alliance and Philadelphia Green, operate ... tive value of percent as the amount tax receipts that parkland adds to the assessed value of all dwellings within 500 feet of parks (The preponderance of studies has revealed that excellent parks ... university quadrangles, and corporate campuses.) Third, the amount and characteristics of rainfall are calculated from U.S weather data The model (which Philadelphia Department of Parks and Recreation...