{
  "version": "2026-08-30",
  "parkCode": "isro",
  "title": "Isle Royale source and layer catalog",
  "sourcePriority": [
    "Current NPS enterprise/open data",
    "NPS program-specific GIS",
    "Current NPS downloadable document",
    "Older NPS Data Store GIS",
    "NPMaps-rendered NPS map",
    "Explicitly labeled derived geometry"
  ],
  "items": [
    {
      "id": "visitor-web-map",
      "npmapsCategory": "current park map",
      "label": "Current visitor map geometry",
      "kind": "vector",
      "state": "live",
      "publisher": "National Park Service / ArcGIS Online",
      "source": "https://www.arcgis.com/home/item.html?id=75e3ceba038a45f7b4d5a9d7c6a46ccf",
      "notes": "Primary runtime source is the public visitor web map when readable. If it fails, the tool can fall back to a public 2021 Isle Royale FeatureServer with POIs, trails, and park boundary before using approximate local anchors. Current closures, regulations, transportation, and campground status always hand off to current NPS pages.",
      "dataServiceFallback": "https://services1.arcgis.com/XBhYkoXKJCRHbe7M/arcgis/rest/services/Isle_Royale_WFL1/FeatureServer",
      "fallbackVintage": "2021-04-22"
    },
    {
      "id": "visitor-web-map-fallback",
      "npmapsCategory": "current park map",
      "label": "Visitor map fallback item",
      "kind": "vector",
      "state": "fallback",
      "publisher": "National Park Service / ArcGIS Online",
      "source": "https://www.arcgis.com/home/item.html?id=57a5a514a8cd40f098b2f99029d118cf",
      "notes": "Secondary public web map item. If both web-map items fail, a public 2021 FeatureServer is tried before any approximate local anchors."
    },
    {
      "id": "regional-map",
      "npmapsCategory": "regional map",
      "label": "Regional access and transportation map",
      "kind": "document",
      "state": "cataloged",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/mapsbrochures.htm",
      "notes": "Use as a planning/reference source; operational transportation information must be verified against current NPS and operators."
    },
    {
      "id": "rock-harbor",
      "npmapsCategory": "Rock Harbor detail",
      "label": "Rock Harbor area guide",
      "kind": "document",
      "state": "cataloged",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/upload/ISRO_Web_Accessible_Rock_Harbor_Area_Guide_2015.pdf",
      "notes": "Direct NPS Rock Harbor Area Guide (2015). Use for facility/orientation context; current operational status still comes from current NPS pages."
    },
    {
      "id": "windigo",
      "npmapsCategory": "Windigo detail",
      "label": "Windigo area guide",
      "kind": "document",
      "state": "cataloged",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/upload/ISRO_Web_Accessible_Windigo_Area_Guide_2015.pdf",
      "notes": "Direct NPS Windigo Area Guide (2015). Use for facility/orientation context; current operational status still comes from current NPS pages."
    },
    {
      "id": "camping-zones",
      "npmapsCategory": "camping zones",
      "label": "Off-trail camping zones",
      "kind": "polygon/reference",
      "state": "current-status-plus-reference",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/off-trail-camping.htm",
      "notes": "Isle Royale uses 46 off-trail camping zones on the permit map. Current closure zone numbers are parsed from the NPS Current Conditions feed and surfaced as operational status without inventing polygon geometry; verify the current permit map and conditions before departure."
    },
    {
      "id": "transportation",
      "npmapsCategory": "transportation map",
      "label": "Ferry, seaplane and water access",
      "kind": "line/reference",
      "state": "runtime-plus-reference",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/directions.htm",
      "notes": "Public web-map routes may render at runtime; current schedules remain external operational data."
    },
    {
      "id": "shipwrecks",
      "npmapsCategory": "dive / shipwreck map",
      "label": "Shipwrecks and current dive buoys",
      "kind": "point",
      "state": "live-api",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/scuba-diving.htm",
      "notes": "Runtime discovers the current NPS Shipwreck Buoys sortable dataset, maps only rows with parseable NPS buoy GPS coordinates, and retains depth/vessel/buoy details in the maritime layer. Buoys and dive conditions can change; verify NPS before diving.",
      "vintage": "current NPS scuba page / downloadable buoy dataset"
    },
    {
      "id": "relief",
      "npmapsCategory": "relief map",
      "label": "USGS shaded relief / terrain",
      "kind": "raster tile",
      "state": "live-tile",
      "publisher": "U.S. Geological Survey",
      "source": "https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer",
      "notes": "Keyless cached relief overlay derived from 3DEP at larger scales and GMTED2010 at smaller scales. Used as an optional terrain context layer, not as navigation data.",
      "vintage": "USGS The National Map shaded relief; data refreshed April 2025"
    },
    {
      "id": "lighthouses",
      "npmapsCategory": "lighthouse map",
      "label": "Isle Royale lighthouses",
      "kind": "point",
      "state": "runtime-plus-reference",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/learn/historyculture/lighthouses.htm",
      "notes": "Four lighthouse locations; current access restrictions must come from current NPS information."
    },
    {
      "id": "geology",
      "npmapsCategory": "geologic map",
      "label": "Geology",
      "kind": "polygon",
      "state": "generated-runtime",
      "publisher": "National Park Service Geologic Resources Inventory",
      "source": "https://catalog.data.gov/dataset/digital-geologic-gis-map-of-isle-royale-national-park-and-vicinity-michigan-nps-grd-g-1996",
      "notes": "Generated from the NPS GRI GeoPackage: 1,975 geologic-unit features, reprojected and simplified for web use. Manifest records SHA-256 and source accuracy caveat; not survey-grade.",
      "vintage": "NPS GRI digital release 2021; older source mapping",
      "web_path": "/isle-royale-map/data/geology-units.geojson"
    },
    {
      "id": "vegetation-detailed",
      "npmapsCategory": "detailed vegetation map",
      "label": "Vegetation baseline (2000)",
      "kind": "polygon",
      "state": "generated-runtime",
      "publisher": "National Park Service",
      "source": "https://catalog.data.gov/dataset/geospatial-data-for-the-vegetation-mapping-inventory-project-of-isle-royale-national-park",
      "vintage": "2000 inventory; imagery primarily 1994/1996",
      "notes": "Historical baseline only. The 19,072 source polygons are dissolved into 38 TNC_DESCRI vegetation classes and simplified for opt-in web display. Do not interpret as current forest condition.",
      "web_path": "/isle-royale-map/data/vegetation-baseline-2000.geojson"
    },
    {
      "id": "vegetation-simple",
      "npmapsCategory": "simplified vegetation map",
      "label": "Vegetation overview (2000) — 6 broad classes",
      "kind": "derived polygon",
      "state": "generated-runtime",
      "publisher": "Derived from NPS vegetation inventory",
      "source": "https://catalog.data.gov/dataset/geospatial-data-for-the-vegetation-mapping-inventory-project-of-isle-royale-national-park",
      "notes": "Six visitor-facing classes derived from the verified detailed NPS inventory, dissolved by broad family and simplified for web orientation. Historical baseline only, not current vegetation.",
      "web_path": "/isle-royale-map/data/vegetation-overview-2000.geojson",
      "vintage": "Derived overview of the 2000 NPS vegetation inventory; imagery primarily 1994/1996"
    },
    {
      "id": "quiet-no-wake",
      "npmapsCategory": "assorted / boating",
      "label": "Quiet / No-Wake zones — 22 official polygons",
      "kind": "polygon",
      "state": "generated-runtime",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/quiet-no-wake.htm",
      "notes": "The 22 official NPS zone files are assembled one-zone-per-file. Mott, Rock Harbor/Snug Harbor, and Washington Harbor are classified as the three No-Wake zones from the current compendium; the remaining 19 are Quiet/No-Wake zones.",
      "web_path": "/isle-royale-map/data/quiet-no-wake-zones.geojson",
      "vintage": "Official NPS DataStore Collection 9705; 22 per-zone GeoJSON files validated against the 2026 Superintendent's Compendium",
      "dataset": "https://irmaservices.nps.gov/datastore/v8/rest/SavedCollection/Profile/9705"
    },
    {
      "id": "anchorage-zones",
      "npmapsCategory": "assorted / boating",
      "label": "Anchorage zones",
      "kind": "polygon/reference",
      "state": "cataloged",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/upload/ISRO_Web__Accessible_Boating_Anchorage_Zones_Map_2018.pdf",
      "notes": "Direct NPS Anchorage Zones map (2018), retained as an official boating-planning reference. Verify current restrictions and conditions before acting."
    },
    {
      "id": "historic-brochure",
      "npmapsCategory": "historical map",
      "label": "Archived brochure map",
      "kind": "raster/document",
      "state": "reference-only",
      "publisher": "National Park Service; discovered via NPMaps",
      "source": "https://npmaps.com/isle-royale/",
      "notes": "Historical/reference layer only. Never present old route or regulation information as current."
    },
    {
      "id": "historic-windigo",
      "npmapsCategory": "historical map",
      "label": "Historic Windigo Nature Trail map",
      "kind": "raster/document",
      "state": "reference-only",
      "publisher": "National Park Service; discovered via NPMaps",
      "source": "https://npmaps.com/isle-royale/",
      "notes": "Date-stamp and keep disabled by default if later georeferenced."
    },
    {
      "id": "boat-in-campgrounds-live",
      "npmapsCategory": "boating / campground operations",
      "label": "Boat-in campground facilities",
      "kind": "tabular",
      "state": "live-api",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/boat-in-campgrounds.htm",
      "dataset": "https://www.nps.gov/common/uploads/sortable_dataset/isro/2DF94ED6-9CAA-9B24-8BD6A700012D59F3/isro-BoaterTable.csv",
      "vintage": "page updated June 23, 2026",
      "notes": "Fetched through the same-origin Isle Royale API and matched to mapped campgrounds by normalized public place name. Includes dock depth, shelters, tent sites, food lockers, stay limit, fire/grill and generator fields when NPS supplies them."
    },
    {
      "id": "current-conditions-live",
      "npmapsCategory": "current park operations",
      "label": "Current Isle Royale conditions and closures",
      "kind": "operational reference",
      "state": "live-api",
      "publisher": "National Park Service",
      "source": "https://www.nps.gov/isro/planyourvisit/current-conditions-at-isle-royale.htm",
      "notes": "Fetched through the same-origin Isle Royale API. The tool detects only closure patterns it knows how to parse and never treats a no-match result as proof that the park has no alerts."
    },
    {
      "id": "vegetation-change-1996-2017",
      "npmapsCategory": "science / ecological change",
      "label": "Vegetation change, 1996–2017",
      "kind": "polygon",
      "state": "generated-runtime",
      "publisher": "U.S. Geological Survey",
      "source": "https://doi.org/10.5066/P9393VFK",
      "web_path": "/isle-royale-map/data/vegetation-change-1996-2017.geojson",
      "vintage": "2017 high-resolution imagery compared with the 2000 NPS vegetation map (1994/1996 imagery)",
      "notes": "Shows mapped vegetation cover type, density or pattern change and proposed reasons from the USGS release; not a present-day 2026 vegetation map."
    },
    {
      "id": "horne-fire-2021",
      "npmapsCategory": "science / wildfire history",
      "label": "2021 Horne Fire burn severity",
      "kind": "polygon",
      "state": "generated-runtime",
      "publisher": "U.S. Geological Survey",
      "source": "https://doi.org/10.5066/P13QWXNI",
      "web_path": "/isle-royale-map/data/horne-fire-burn-severity.geojson",
      "vintage": "2021 Horne Fire; USGS data release published 2024",
      "notes": "Burn-severity assessment derived from pre/post-fire high-resolution imagery; use as historical ecological context, not a current fire-status layer."
    }
  ],
  "updated": "2026-08-30"
}