use blue-tint to fill polygon 9370 to identify overlapped polygon
The more blue-er area have more overlapped polygon,
the lighter blue has single or less overlapped polygon
https://transparentgov.net/json2tree/datahub.io/embed/featurelayer_label_color.html?backgroundlayerurl=https%3A%2F%2Fgis.usgs.gov%2Fpadus%2Frest%2Fservices%2Fpadus3%2FManager_Name%2FMapServer%2F0&layer=Protected+Areas+Database+of+the+United+States+%28PAD-US%29+v3.0&clickorhover=hover&dynamicLabelField=nolabel&polygonFillBy=blue-tint
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgis.usgs.gov%2Fpadus%2Frest%2Fservices&org=USGS+Protected+Areas+PAD%2C%26nbsp%3B%26nbsp%3B&cross=default&timeout=10000&select_folder=12&select_layer=0&arcgis_online_token=