{
 "ocl_version": "0.1.0",
 "name": "Deerfield Road",
 "slug": "deerfield-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.557702868720696,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 441.0,
   "end_distance_m": 443.0,
   "start_elevation_m": 109.4869139678006,
   "end_elevation_m": 110.41806802517502,
   "min_gradient_pct": -35.78490831626553,
   "suppressed_max_gradient_pct": 65.0442341434129,
   "suppressed_location_m": [
    276.0,
    278.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 46.17619493151134,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 440.0,
   "end_distance_m": 443.0,
   "start_elevation_m": 109.03278217722968,
   "end_elevation_m": 110.41806802517502,
   "min_gradient_pct": -34.11826909130345,
   "suppressed_max_gradient_pct": 57.826176599788916,
   "suppressed_location_m": [
    275.0,
    278.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 44.42993047768141,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 440.0,
   "end_distance_m": 445.0,
   "start_elevation_m": 109.03278217722968,
   "end_elevation_m": 111.25427870111375,
   "min_gradient_pct": -29.255511827369673,
   "suppressed_max_gradient_pct": 47.72894700645196,
   "suppressed_location_m": [
    273.0,
    278.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 40.86031804593745,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 435.0,
   "end_distance_m": 445.0,
   "start_elevation_m": 107.16824689652,
   "end_elevation_m": 111.25427870111375,
   "min_gradient_pct": -25.185414470380607
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 33.835144989782506,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 433.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 106.77449123531332,
   "end_elevation_m": 113.54152023326982,
   "min_gradient_pct": -18.558245534501125
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 31.943979394116294,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 425.0,
   "end_distance_m": 450.0,
   "start_elevation_m": 104.92818718972136,
   "end_elevation_m": 112.91418203825043,
   "min_gradient_pct": -15.229885038880354
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 27.218954759654054,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 101.19793586325989,
   "end_elevation_m": 114.80741324308691,
   "min_gradient_pct": -7.266499707389727
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.05274490362237,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 400.0,
   "end_distance_m": 500.0,
   "start_elevation_m": 100.21298157963119,
   "end_elevation_m": 116.26572648325356,
   "min_gradient_pct": -3.6593975451988996,
   "suppressed_max_gradient_pct": 18.252307190615966,
   "suppressed_location_m": [
    375.0,
    475.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.457,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 72.0,
  "shape_class": "stepped"
 },
 "length_m": 1159.6045656371837,
 "start_elevation_m": 99.1054695127851,
 "end_elevation_m": 153.67673733155124,
 "endpoint_gain_m": 54.57126781876613,
 "overall_gradient_pct": 4.706023883993602,
 "accumulated_ascent_m": 78.40814682210438,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 44.42993047768141,
   "start_distance_m": 440.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 442.5,
   "start_elevation_m": 109.03278217722968,
   "end_elevation_m": 111.25427870111375,
   "start_xy": [
    388282.91513903724,
    4872738.598293049
   ],
   "end_xy": [
    388286.9705906316,
    4872735.673688632
   ]
  },
  "max_10m": {
   "gradient_pct": 40.86031804593745,
   "start_distance_m": 435.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 440.0,
   "start_elevation_m": 107.16824689652,
   "end_elevation_m": 111.25427870111375,
   "start_xy": [
    388278.85955535393,
    4872741.522714078
   ],
   "end_xy": [
    388286.9705906316,
    4872735.673688632
   ]
  },
  "max_20m": {
   "gradient_pct": 33.835144989782506,
   "start_distance_m": 433.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 443.0,
   "start_elevation_m": 106.77449123531332,
   "end_elevation_m": 113.54152023326982,
   "start_xy": [
    388277.2375115586,
    4872742.692745671
   ],
   "end_xy": [
    388293.459582113,
    4872730.994694776
   ]
  },
  "max_25m": {
   "gradient_pct": 31.943979394116294,
   "start_distance_m": 425.0,
   "end_distance_m": 450.0,
   "midpoint_distance_m": 437.5,
   "start_elevation_m": 104.92818718972136,
   "end_elevation_m": 112.91418203825043,
   "start_xy": [
    388270.74852007674,
    4872747.371739525
   ],
   "end_xy": [
    388291.0261743145,
    4872732.749267602
   ]
  },
  "max_50m": {
   "gradient_pct": 27.218954759654054,
   "start_distance_m": 410.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 101.19793586325989,
   "end_elevation_m": 114.80741324308691,
   "start_xy": [
    388258.5820332052,
    4872756.14536939
   ],
   "end_xy": [
    388299.13720959215,
    4872726.900242156
   ]
  },
  "max_100m": {
   "gradient_pct": 16.05274490362237,
   "start_distance_m": 400.0,
   "end_distance_m": 500.0,
   "midpoint_distance_m": 450.0,
   "start_elevation_m": 100.21298157963119,
   "end_elevation_m": 116.26572648325356,
   "start_xy": [
    388250.47099792754,
    4872761.994394836
   ],
   "end_xy": [
    388331.5816928067,
    4872703.504614931
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -29.255511827369673,
   "start_distance_m": 314.0,
   "end_distance_m": 319.0,
   "midpoint_distance_m": 316.5,
   "start_elevation_m": 100.40957445368942,
   "end_elevation_m": 98.94679886232093,
   "start_xy": [
    388180.7157680224,
    4872812.295560674
   ],
   "end_xy": [
    388184.77169381053,
    4872809.371614206
   ]
  },
  "min_10m": {
   "gradient_pct": -25.185414470380607,
   "start_distance_m": 315.0,
   "end_distance_m": 325.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 100.24567240146978,
   "end_elevation_m": 97.72713095443171,
   "start_xy": [
    388181.52679272264,
    4872811.710548767
   ],
   "end_xy": [
    388189.6378280209,
    4872805.861523349
   ]
  },
  "min_20m": {
   "gradient_pct": -18.558245534501125,
   "start_distance_m": 311.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 321.0,
   "start_elevation_m": 100.69771805617286,
   "end_elevation_m": 96.98606894927264,
   "start_xy": [
    388178.2827023287,
    4872814.050608061
   ],
   "end_xy": [
    388194.50477288355,
    4872802.352557167
   ]
  },
  "min_25m": {
   "gradient_pct": -15.229885038880354,
   "start_distance_m": 311.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 323.5,
   "start_elevation_m": 100.69771805617286,
   "end_elevation_m": 96.89024679645277,
   "start_xy": [
    388178.2827023287,
    4872814.050608061
   ],
   "end_xy": [
    388198.5603565669,
    4872799.428136138
   ]
  },
  "min_50m": {
   "gradient_pct": -7.266499707389727,
   "start_distance_m": 298.0,
   "end_distance_m": 348.0,
   "midpoint_distance_m": 323.0,
   "start_elevation_m": 100.60140438965298,
   "end_elevation_m": 96.96815453595812,
   "start_xy": [
    388167.738259253,
    4872821.654206334
   ],
   "end_xy": [
    388208.29377774475,
    4872792.409553661
   ]
  },
  "min_100m": {
   "gradient_pct": -3.6593975451988996,
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 100.78661695559627,
   "end_elevation_m": 97.12721941039737,
   "start_xy": [
    388030.0783376317,
    4872679.344378187
   ],
   "end_xy": [
    388096.6610098306,
    4872753.955011011
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.557702868720696,
   "start_distance_m": 441.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 442.0,
   "start_elevation_m": 109.4869139678006,
   "end_elevation_m": 110.41806802517502,
   "start_xy": [
    388283.7261609352,
    4872738.013277254
   ],
   "end_xy": [
    388285.34854683577,
    4872736.843720224
   ]
  },
  "max_3m": {
   "gradient_pct": 46.17619493151134,
   "start_distance_m": 440.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 441.5,
   "start_elevation_m": 109.03278217722968,
   "end_elevation_m": 110.41806802517502,
   "start_xy": [
    388282.91513903724,
    4872738.598293049
   ],
   "end_xy": [
    388285.34854683577,
    4872736.843720224
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.04,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    274.0,
    280.0
   ],
   [
    361.0,
    399.0
   ]
  ],
  "review": [
   "max10_over_40"
  ],
  "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/me/USGS_1M_19_x38y488_ME_SouthCentral_B22.tif"
  ],
  "calculated_at": "2026-08-25T06:08:45+00:00",
  "road_source": "../ne-docs/me/deerfield-road/deerfield-road.geojson",
  "run_id": "rebatch-xsection-me-260825",
  "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, ME_SouthCentral_B22 (collected 2022)",
  "elevation_tile_ids": [
   "x38y488"
  ],
  "climb_origin": "discovered",
  "notes": "NE box session: masked re-batch, xsection channel-crossing evidence (calibrated vs the NHD-confirmed population, 2026-08-25) + manifest masks where present. ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'. MASKED RE-BATCH (2026-08-25): culvert-class V-dip masks applied (NHD flowline / xsection channel-crossing evidence, ne-adoption-audits); superseded values in B2 redo trees.",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "mask_ranges_m": [
   [
    366.0,
    394.0
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "New Gloucester",
  "county": "Maine"
 }
}