{
 "ocl_version": "0.1.0",
 "name": "Split Rock Road",
 "slug": "split-rock-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.244494368740504,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 395.0,
   "end_distance_m": 397.0,
   "start_elevation_m": 220.30065232449968,
   "end_elevation_m": 220.9055422118745,
   "min_gradient_pct": -7.122942426869372
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.45625354865437,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 394.0,
   "end_distance_m": 397.0,
   "start_elevation_m": 220.02185460541486,
   "end_elevation_m": 220.9055422118745,
   "min_gradient_pct": -5.521080279268631
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.92941679554872,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 394.0,
   "end_distance_m": 399.0,
   "start_elevation_m": 220.02185460541486,
   "end_elevation_m": 221.4183254451923,
   "min_gradient_pct": -5.527437513256359
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.659232044054306,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 393.0,
   "end_distance_m": 403.0,
   "start_elevation_m": 219.7911624008363,
   "end_elevation_m": 222.45708560524173,
   "min_gradient_pct": -3.307899574718647
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.87649118957947,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 385.0,
   "end_distance_m": 405.0,
   "start_elevation_m": 217.89739377053422,
   "end_elevation_m": 222.87269200845012,
   "min_gradient_pct": -2.838351408695843
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.806706473591134,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 380.0,
   "end_distance_m": 405.0,
   "start_elevation_m": 216.92101539005233,
   "end_elevation_m": 222.87269200845012,
   "min_gradient_pct": -2.7249153778053596
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.602123663535508,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 364.0,
   "end_distance_m": 414.0,
   "start_elevation_m": 214.12178962085844,
   "end_elevation_m": 224.4228514526262,
   "min_gradient_pct": -2.135816342498856
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.434724834154792,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 379.0,
   "end_distance_m": 479.0,
   "start_elevation_m": 216.7323354726857,
   "end_elevation_m": 234.16706030684048,
   "min_gradient_pct": -0.4923169780496437
  }
 ],
 "shape": {
  "ascent_concentration": 0.516,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "stepped"
 },
 "length_m": 799.987853335373,
 "start_elevation_m": 197.05185708532863,
 "end_elevation_m": 257.82934286743296,
 "endpoint_gain_m": 60.77748578210432,
 "overall_gradient_pct": 7.597301075098327,
 "accumulated_ascent_m": 62.74314536743236,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.92941679554872,
   "start_distance_m": 394.0,
   "end_distance_m": 399.0,
   "midpoint_distance_m": 396.5,
   "start_elevation_m": 220.02185460541486,
   "end_elevation_m": 221.4183254451923,
   "start_xy": [
    569205.0812388777,
    4551851.829469084
   ],
   "end_xy": [
    569200.097828662,
    4551852.236436678
   ]
  },
  "max_10m": {
   "gradient_pct": 26.659232044054306,
   "start_distance_m": 393.0,
   "end_distance_m": 403.0,
   "midpoint_distance_m": 398.0,
   "start_elevation_m": 219.7911624008363,
   "end_elevation_m": 222.45708560524173,
   "start_xy": [
    569206.0779209208,
    4551851.748075565
   ],
   "end_xy": [
    569196.1342860468,
    4551852.719886097
   ]
  },
  "max_20m": {
   "gradient_pct": 24.87649118957947,
   "start_distance_m": 385.0,
   "end_distance_m": 405.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 217.89739377053422,
   "end_elevation_m": 222.87269200845012,
   "start_xy": [
    569214.0571108554,
    4551851.756443095
   ],
   "end_xy": [
    569194.1782873707,
    4551853.137102083
   ]
  },
  "max_25m": {
   "gradient_pct": 23.806706473591134,
   "start_distance_m": 380.0,
   "end_distance_m": 405.0,
   "midpoint_distance_m": 392.5,
   "start_elevation_m": 216.92101539005233,
   "end_elevation_m": 222.87269200845012,
   "start_xy": [
    569219.0468433643,
    4551852.076707813
   ],
   "end_xy": [
    569194.1782873707,
    4551853.137102083
   ]
  },
  "max_50m": {
   "gradient_pct": 20.602123663535508,
   "start_distance_m": 364.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 389.0,
   "start_elevation_m": 214.12178962085844,
   "end_elevation_m": 224.4228514526262,
   "start_xy": [
    569234.6948337522,
    4551855.268061387
   ],
   "end_xy": [
    569185.3655440465,
    4551854.9576251805
   ]
  },
  "max_100m": {
   "gradient_pct": 17.434724834154792,
   "start_distance_m": 379.0,
   "end_distance_m": 479.0,
   "midpoint_distance_m": 429.0,
   "start_elevation_m": 216.7323354726857,
   "end_elevation_m": 234.16706030684048,
   "start_xy": [
    569220.044789866,
    4551852.140760757
   ],
   "end_xy": [
    569122.3320125667,
    4551853.454246898
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.527437513256359,
   "start_distance_m": 116.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 118.5,
   "start_elevation_m": 196.35024216113698,
   "end_elevation_m": 196.07387028547416,
   "start_xy": [
    569479.5680834877,
    4551870.570399173
   ],
   "end_xy": [
    569474.8570858164,
    4551868.9296297
   ]
  },
  "min_10m": {
   "gradient_pct": -3.307899574718647,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 197.05185708532863,
   "end_elevation_m": 196.72106712785677,
   "start_xy": [
    569582.164,
    4551885.011
   ],
   "end_xy": [
    569573.1407533303,
    4551889.321150614
   ]
  },
  "min_20m": {
   "gradient_pct": -2.838351408695843,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 197.05185708532863,
   "end_elevation_m": 196.48418680358947,
   "start_xy": [
    569582.164,
    4551885.011
   ],
   "end_xy": [
    569564.3570788405,
    4551894.097824992
   ]
  },
  "min_25m": {
   "gradient_pct": -2.7249153778053596,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 197.05185708532863,
   "end_elevation_m": 196.3706282408773,
   "start_xy": [
    569582.164,
    4551885.011
   ],
   "end_xy": [
    569560.0801036364,
    4551896.687705897
   ]
  },
  "min_50m": {
   "gradient_pct": -2.135816342498856,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 197.05185708532863,
   "end_elevation_m": 195.9839489140792,
   "start_xy": [
    569582.164,
    4551885.011
   ],
   "end_xy": [
    569536.3070505443,
    4551902.161136471
   ]
  },
  "min_100m": {
   "gradient_pct": -0.4923169780496437,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 197.05185708532863,
   "end_elevation_m": 196.559540107279,
   "start_xy": [
    569582.164,
    4551885.011
   ],
   "end_xy": [
    569493.7775542851,
    4551877.614083537
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.244494368740504,
   "start_distance_m": 395.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 396.0,
   "start_elevation_m": 220.30065232449968,
   "end_elevation_m": 220.9055422118745,
   "start_xy": [
    569204.0845568345,
    4551851.910862602
   ],
   "end_xy": [
    569202.0911927483,
    4551852.07364964
   ]
  },
  "max_3m": {
   "gradient_pct": 29.45625354865437,
   "start_distance_m": 394.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 395.5,
   "start_elevation_m": 220.02185460541486,
   "end_elevation_m": 220.9055422118745,
   "start_xy": [
    569205.0812388777,
    4551851.829469084
   ],
   "end_xy": [
    569202.0911927483,
    4551852.07364964
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.184,
   "obstruction_max_height_m": 22.94,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nj/USGS_1M_18_x56y456_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T01:50:55+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-jersey-2026-09-06.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "nj-run2-260906",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, NJ_NW_New_Jersey_6_County_Lidar_2017_B17 (collected 2017)",
  "elevation_tile_ids": [
   "x56y456"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NJ_NW6Co_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Mahwah",
  "county": "New Jersey"
 }
}