It is not Lapwai Lake. It is Winchester Lake. Lapwai Creek is the creek that runs out of Winchester Lake. Says Bill
Winchester Dam has delightful water scenery and it's in the vicinity of Lapwai Lake, and why not camp at Winchester Lake State Park since you're here at Lapwai Lake. This lake is so wonderful. If you need a place to stay Days Inn Lewiston is a great choice; Talmaks Campground is a glorious local campground. Winchester Lake State
Park is both glorious and beautiful, and it's near Lapwai Lake, and this is a popular location for folks from Winchester. Lapwai Lake gets a common amount of precipitation.