Table: allegheny_islands_state_park
Columns: park_name
county_or_counties
area_in_acres_ha
date_founded
stream_s_and_or_lake_s

Question: what is the stream(s) and / or lake(s) when the date founded is 1959?
SQL: SELECT "stream_s_and_or_lake_s" FROM allegheny_islands_state_park WHERE "date_founded" = 1959

Question: What is the area in acres (ha) for the park bald eagle state park?
SQL: SELECT "area_in_acres_ha" FROM allegheny_islands_state_park WHERE "park_name" = 'bald eagle state park'

Question: what is the most recent date founded in elk county?
SQL: SELECT MAX("date_founded") FROM allegheny_islands_state_park WHERE "county_or_counties" = 'elk county'

Question: how many parks are name beltzville state park?
SQL: SELECT COUNT("date_founded") FROM allegheny_islands_state_park WHERE "park_name" = 'beltzville state park'