{
 "ocl_version": "0.1.0",
 "name": "Hurricane Road",
 "slug": "hurricane-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.582443984327938,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 5578.0,
   "end_distance_m": 5580.0,
   "start_elevation_m": 673.8611432400234,
   "end_elevation_m": 674.3127921197099,
   "min_gradient_pct": -13.791270715955761
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.370384798157676,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 5577.0,
   "end_distance_m": 5580.0,
   "start_elevation_m": 673.7016805757652,
   "end_elevation_m": 674.3127921197099,
   "min_gradient_pct": -11.336729341185977
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.974598014986896,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 5577.0,
   "end_distance_m": 5582.0,
   "start_elevation_m": 673.7016805757652,
   "end_elevation_m": 674.6004104765145,
   "min_gradient_pct": -8.403325062715794
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 16.45237985507606,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2403.0,
   "end_distance_m": 2413.0,
   "start_elevation_m": 451.04114877414247,
   "end_elevation_m": 452.6863867596501,
   "min_gradient_pct": -6.416857676451855
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.308225411216313,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2403.0,
   "end_distance_m": 2423.0,
   "start_elevation_m": 451.04114877414247,
   "end_elevation_m": 454.30279385638573,
   "min_gradient_pct": -5.871202269816536
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.103512794908966,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2398.0,
   "end_distance_m": 2423.0,
   "start_elevation_m": 450.2769156576585,
   "end_elevation_m": 454.30279385638573,
   "min_gradient_pct": -5.796997608145375
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.774195097304414,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2384.0,
   "end_distance_m": 2434.0,
   "start_elevation_m": 448.1168325973509,
   "end_elevation_m": 456.0039301460031,
   "min_gradient_pct": -4.589479615438449
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.004210813236512,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2384.0,
   "end_distance_m": 2484.0,
   "start_elevation_m": 448.1168325973509,
   "end_elevation_m": 463.1210434105874,
   "min_gradient_pct": -3.002209214415757
  }
 ],
 "shape": {
  "ascent_concentration": 0.376,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 519.0,
  "shape_class": "sustained"
 },
 "length_m": 5757.257336779813,
 "start_elevation_m": 254.87990974364848,
 "end_elevation_m": 680.4597805153742,
 "endpoint_gain_m": 425.5798707717257,
 "overall_gradient_pct": 7.392059202442457,
 "accumulated_ascent_m": 435.0892081403017,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.974598014986896,
   "start_distance_m": 5577.0,
   "end_distance_m": 5582.0,
   "midpoint_distance_m": 5579.5,
   "start_elevation_m": 673.7016805757652,
   "end_elevation_m": 674.6004104765145,
   "start_xy": [
    601106.0772826648,
    4901587.494210079
   ],
   "end_xy": [
    601105.6785839763,
    4901592.478288666
   ]
  },
  "max_10m": {
   "gradient_pct": 16.45237985507606,
   "start_distance_m": 2403.0,
   "end_distance_m": 2413.0,
   "midpoint_distance_m": 2408.0,
   "start_elevation_m": 451.04114877414247,
   "end_elevation_m": 452.6863867596501,
   "start_xy": [
    598465.3157523926,
    4901617.721742519
   ],
   "end_xy": [
    598475.3157511193,
    4901617.716696068
   ]
  },
  "max_20m": {
   "gradient_pct": 16.308225411216313,
   "start_distance_m": 2403.0,
   "end_distance_m": 2423.0,
   "midpoint_distance_m": 2413.0,
   "start_elevation_m": 451.04114877414247,
   "end_elevation_m": 454.30279385638573,
   "start_xy": [
    598465.3157523926,
    4901617.721742519
   ],
   "end_xy": [
    598485.3157498459,
    4901617.711649617
   ]
  },
  "max_25m": {
   "gradient_pct": 16.103512794908966,
   "start_distance_m": 2398.0,
   "end_distance_m": 2423.0,
   "midpoint_distance_m": 2410.5,
   "start_elevation_m": 450.2769156576585,
   "end_elevation_m": 454.30279385638573,
   "start_xy": [
    598460.3157530292,
    4901617.724265744
   ],
   "end_xy": [
    598485.3157498459,
    4901617.711649617
   ]
  },
  "max_50m": {
   "gradient_pct": 15.774195097304414,
   "start_distance_m": 2384.0,
   "end_distance_m": 2434.0,
   "midpoint_distance_m": 2409.0,
   "start_elevation_m": 448.1168325973509,
   "end_elevation_m": 456.0039301460031,
   "start_xy": [
    598446.3157548119,
    4901617.731330776
   ],
   "end_xy": [
    598496.3157484452,
    4901617.706098521
   ]
  },
  "max_100m": {
   "gradient_pct": 15.004210813236512,
   "start_distance_m": 2384.0,
   "end_distance_m": 2484.0,
   "midpoint_distance_m": 2434.0,
   "start_elevation_m": 448.1168325973509,
   "end_elevation_m": 463.1210434105874,
   "start_xy": [
    598446.3157548119,
    4901617.731330776
   ],
   "end_xy": [
    598546.3157420786,
    4901617.680866266
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.403325062715794,
   "start_distance_m": 5659.0,
   "end_distance_m": 5664.0,
   "midpoint_distance_m": 5661.5,
   "start_elevation_m": 680.6888742099196,
   "end_elevation_m": 680.2687079567838,
   "start_xy": [
    601106.8628841257,
    4901667.984984826
   ],
   "end_xy": [
    601111.7329292607,
    4901669.058241386
   ]
  },
  "min_10m": {
   "gradient_pct": -6.416857676451855,
   "start_distance_m": 3482.0,
   "end_distance_m": 3492.0,
   "midpoint_distance_m": 3487.0,
   "start_elevation_m": 522.6096476975465,
   "end_elevation_m": 521.9679619299013,
   "start_xy": [
    599500.5526237924,
    4901349.503646328
   ],
   "end_xy": [
    599509.515305234,
    4901345.076840499
   ]
  },
  "min_20m": {
   "gradient_pct": -5.871202269816536,
   "start_distance_m": 3477.0,
   "end_distance_m": 3497.0,
   "midpoint_distance_m": 3487.0,
   "start_elevation_m": 522.8851158573212,
   "end_elevation_m": 521.7108754033579,
   "start_xy": [
    599496.044748486,
    4901351.666759877
   ],
   "end_xy": [
    599513.8453644577,
    4901342.576723078
   ]
  },
  "min_25m": {
   "gradient_pct": -5.796997608145375,
   "start_distance_m": 3477.0,
   "end_distance_m": 3502.0,
   "midpoint_distance_m": 3489.5,
   "start_elevation_m": 522.8851158573212,
   "end_elevation_m": 521.4358664552849,
   "start_xy": [
    599496.044748486,
    4901351.666759877
   ],
   "end_xy": [
    599518.1754236814,
    4901340.076605657
   ]
  },
  "min_50m": {
   "gradient_pct": -4.589479615438449,
   "start_distance_m": 3468.0,
   "end_distance_m": 3518.0,
   "midpoint_distance_m": 3493.0,
   "start_elevation_m": 523.1959078325028,
   "end_elevation_m": 520.9011680247836,
   "start_xy": [
    599487.9305729346,
    4901355.560364263
   ],
   "end_xy": [
    599531.869522328,
    4901331.831673472
   ]
  },
  "min_100m": {
   "gradient_pct": -3.002209214415757,
   "start_distance_m": 3451.0,
   "end_distance_m": 3551.0,
   "midpoint_distance_m": 3501.0,
   "start_elevation_m": 523.3258710558795,
   "end_elevation_m": 520.3236618414637,
   "start_xy": [
    599472.6037968929,
    4901362.914950327
   ],
   "end_xy": [
    599556.195377276,
    4901309.616291211
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.582443984327938,
   "start_distance_m": 5578.0,
   "end_distance_m": 5580.0,
   "midpoint_distance_m": 5579.0,
   "start_elevation_m": 673.8611432400234,
   "end_elevation_m": 674.3127921197099,
   "start_xy": [
    601105.9975429272,
    4901588.491025797
   ],
   "end_xy": [
    601105.8380634517,
    4901590.484657232
   ]
  },
  "max_3m": {
   "gradient_pct": 20.370384798157676,
   "start_distance_m": 5577.0,
   "end_distance_m": 5580.0,
   "midpoint_distance_m": 5578.5,
   "start_elevation_m": 673.7016805757652,
   "end_elevation_m": 674.3127921197099,
   "start_xy": [
    601106.0772826648,
    4901587.494210079
   ],
   "end_xy": [
    601105.8380634517,
    4901590.484657232
   ]
  }
 },
 "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": 0.183,
   "obstruction_max_height_m": 31.4,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "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/ny/USGS_1M_18_x59y491_2014_New_York_Clinton_Essex_Lake_Champlain_QL2_LiDAR.tif",
   "data/cache/usa/ny/USGS_1M_18_x60y491_2014_New_York_Clinton_Essex_Lake_Champlain_QL2_LiDAR.tif"
  ],
  "calculated_at": "2026-09-06T11:06:08+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch-band3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ny-run3-260906",
  "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, 2014_New_York_Clinton_Essex_Lake_Champlain_QL2_LiDAR (collected 2014)",
  "elevation_tile_ids": [
   "x59y491",
   "x60y491"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_NY_Cl_Ess_LChamp_P2_2014_LAS_2016",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.999,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Keene",
  "county": "New York"
 }
}