Lower Green River is one of the Washington parks in thicket's catalog. thicket is a field guide to the parks near you: it maps the ones you have never noticed, gives you a reason to actually go, and keeps a record of where you have been.
Where it is
Lower Green River is in King County, Washington. Its approximate coordinates are 47.30399, -122.19090.
Check in at Lower Green River
thicket verifies you are actually here by GPS when you check in, so a visit means you went. Checking in builds a streak, earns achievements, and fills in your map of the places you have been.