Natalie, welcome to osm! I saw some issues with your change and corrected them. A swimming pools isn't natural water, but leisure=swiming_pool. Square/rectangle building should have squared corners, pressing 'Q' key when they are selected will square them for you. Keep mapping!

I went and surveyed area and didn't see it. I did find one around the corner Hillsborough/Willow, and also two more at Hillsborough/Amsterdam. Mapped in changeset/178647002

Go by and look? I think it may have been relocated in front of the country classics park on Amsterdam drive (pointing SSE).

Can you validate the location of this cam? Seems like an odd location.

Len, fyi, updated the hour to the correct format, and expanded the street name abbreviation. Welcome to osm, and I really like your mailbox ;-)

Hi I76, The grass areas that are multipolygon relations have several validation errors because they are sharing segments. Look up Relation:multipolygon in the osm wiki for explanation.
To see the ones with errs, https://tools.geofabrik.de/osmi/?view=areas&lon=-75.24320&lat=40.02287&zoom=18&baselayer=Geofabrik%20Standard&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags

hi Abyssal, welcome to OSM. I saw a broken (accidental) relation and corrected it. I also squared several buildings in the area. You can easily square a building by pressing the Q key when the building is selected. I added a few pools, buildings and poles. Check the changeset and keep mapping! changeset/177896963