{ "layers": [ { "layerId": 0, "layerName": "2023 Aerials Index", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 1, "layerName": "2021 Aerials Index", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 2, "layerName": "2019 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 3, "layerName": "2020 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 4, "layerName": "2017 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 5, "layerName": "2016 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 6, "layerName": "2016 Iowa City Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 7, "layerName": "2014 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 440, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 8, "layerName": "2012 Aerials Index", "layerType": "Feature Layer", "minScale": 450000, "maxScale": 220, "legend": [ { "label": "", "url": "6c7eb2dab5fa4cb7af302ab40beb31ba", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAWElEQVQ4je3UsQ3AIAxE0UO6vWAkRmCEjASTOYpkUKjPpb9kuXuFCxPdDIHR9wSwRKsCaBtceMqQuG7jD4bFBOWoE3cJ6jHAuEpQb9+w+j9T+h7sAZuP3AvU+wutmCM0nAAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }