{
 "made": "2026-11-01T14:59:22+00:00",
 "settings": {
  "velocity_mode": "fixed",
  "dilution_mode": "length",
  "lake_path_mode": "residence_spill",
  "t90_h": 72.0,
  "river_velocity_ms": 0.2,
  "max_upstream_km": 60.0
 },
 "inputs": {
  "overflows": "data/processed/overflows.parquet (main checkout cache, modified 2026-10-30)",
  "network": "OS Open Rivers via data/processed/river_network.pkl, mended as the build mends it"
 },
 "credit": [
  "Contains OS data \u00a9 Crown copyright and database right 2026 (OS Open Rivers, OGL v3.0)",
  "Overflow positions and annual spill counts: Environment Agency Event Duration Monitoring returns, OGL v3.0"
 ],
 "simplify_m": 25,
 "seconds": 17,
 "spots": [
  {
   "id": "bw-uke4100-08901",
   "name": "Wharfe at Cromwheel, Ilkley",
   "lat": 53.93189,
   "lon": -1.81618,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 16,
   "with_path": 14,
   "nearest_h": 0.0,
   "total_weight": 6.764
  },
  {
   "id": "bw-uke2203-08903",
   "name": "Nidd at the Lido, Knaresborough",
   "lat": 53.9982,
   "lon": -1.45145,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 52,
   "with_path": 45,
   "nearest_h": 2.4,
   "total_weight": 14.2785
  },
  {
   "id": "bw-uke4200-08904",
   "name": "Wharfe at Wilderness Carpark",
   "lat": 53.92655,
   "lon": -1.38542,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 53,
   "with_path": 50,
   "nearest_h": 0.0,
   "total_weight": 10.1206
  },
  {
   "id": "bw-uke2204-08905",
   "name": "Swale above Richmond Falls",
   "lat": 54.40058,
   "lon": -1.73468,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 6,
   "with_path": 3,
   "nearest_h": 0.5,
   "total_weight": 3.4578
  },
  {
   "id": "bw-ukf2208-09701",
   "name": "Rutland Water Whitwell Creek",
   "lat": 52.66351,
   "lon": -0.63186,
   "kind": "lake",
   "area": "Midlands",
   "mode": "lake",
   "overflows": 5,
   "with_path": 5,
   "nearest_h": 28.6,
   "total_weight": 0.1631
  },
  {
   "id": "bw-ukf2208-09702",
   "name": "Rutland Water Sykes Lane",
   "lat": 52.66321,
   "lon": -0.61314,
   "kind": "lake",
   "area": "Midlands",
   "mode": "lake",
   "overflows": 5,
   "with_path": 5,
   "nearest_h": 33.2,
   "total_weight": 0.1462
  },
  {
   "id": "bw-ukf1400-09750",
   "name": "Colwick Country Park (West Lake)",
   "lat": 52.94516,
   "lon": -1.09815,
   "kind": "lake",
   "area": "Midlands",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bw-ukh1201-09801",
   "name": "Sheep's Green, River Cam",
   "lat": 52.19607,
   "lon": 0.11683,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 22,
   "with_path": 22,
   "nearest_h": 8.0,
   "total_weight": 2.3963
  },
  {
   "id": "bw-ukh1406-10712",
   "name": "Falcon Meadow, River Waveney",
   "lat": 52.45648,
   "lon": 1.44304,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 26,
   "with_path": 24,
   "nearest_h": 0.3,
   "total_weight": 4.381
  },
  {
   "id": "bw-ukh1401-11051",
   "name": "Friars Meadow, River Stour",
   "lat": 52.03408,
   "lon": 0.73489,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 16,
   "with_path": 15,
   "nearest_h": 0.2,
   "total_weight": 4.6562
  },
  {
   "id": "bw-ukk1302-11760",
   "name": "Cotswold Country Park and Beach",
   "lat": 51.66098,
   "lon": -1.96091,
   "kind": "lake",
   "area": "Thames Valley",
   "mode": "isolated",
   "overflows": 0,
   "note": "not on the mapped river network"
  },
  {
   "id": "bw-uki1101-11910",
   "name": "Hampstead Heath (Ladies Pond)",
   "lat": 51.56672,
   "lon": -0.16009,
   "kind": "lake",
   "area": "London",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bw-uki1101-11920",
   "name": "Hampstead Heath (Mens Pond)",
   "lat": 51.56334,
   "lon": -0.15662,
   "kind": "lake",
   "area": "London",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bw-uki1101-11930",
   "name": "Hampstead Heath (Mixed Pond)",
   "lat": 51.56071,
   "lon": -0.16625,
   "kind": "lake",
   "area": "London",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bw-uki1106-11940",
   "name": "The Serpentine - Hyde Park",
   "lat": 51.50491,
   "lon": -0.16907,
   "kind": "lake",
   "area": "London",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bw-ukj1102-11941",
   "name": "Pangbourne Meadow, River Thames",
   "lat": 51.48683,
   "lon": -1.08394,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 31,
   "with_path": 31,
   "nearest_h": 12.5,
   "total_weight": 1.6932
  },
  {
   "id": "bw-uki2203-11942",
   "name": "Ham and Kingston, River Thames",
   "lat": 51.42702,
   "lon": -0.31074,
   "kind": "river",
   "area": "London",
   "mode": "river",
   "overflows": 46,
   "with_path": 46,
   "nearest_h": 2.3,
   "total_weight": 3.9896
  },
  {
   "id": "bw-ukj2310-11945",
   "name": "Frensham Great Pond",
   "lat": 51.15731,
   "lon": -0.7918,
   "kind": "lake",
   "area": "South and South East",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 6.2,
   "total_weight": 0.6497
  },
  {
   "id": "bw-ukj1402-11946",
   "name": "Wolvercote Mill Stream",
   "lat": 51.78082,
   "lon": -1.29596,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 31,
   "with_path": 31,
   "nearest_h": 4.8,
   "total_weight": 1.9267
  },
  {
   "id": "bw-ukj1403-11947",
   "name": "Wallingford Beach, River Thames",
   "lat": 51.60005,
   "lon": -1.12032,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 44,
   "with_path": 44,
   "nearest_h": 2.1,
   "total_weight": 1.837
  },
  {
   "id": "bw-ukj3308-19001",
   "name": "River Avon at Fordingbridge",
   "lat": 50.92632,
   "lon": -1.78854,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 26,
   "with_path": 25,
   "nearest_h": 0.3,
   "total_weight": 2.7256
  },
  {
   "id": "bw-ukk1500-19002",
   "name": "River Avon at Queen Elizabeth Gardens",
   "lat": 51.06767,
   "lon": -1.80218,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 18,
   "with_path": 18,
   "nearest_h": 22.9,
   "total_weight": 1.611
  },
  {
   "id": "bw-ukk2304-35201",
   "name": "River Tone at French Weir Park",
   "lat": 51.01809,
   "lon": -3.11285,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 38,
   "with_path": 38,
   "nearest_h": 2.0,
   "total_weight": 8.0118
  },
  {
   "id": "bw-ukk1100-36050",
   "name": "Henleaze Lake",
   "lat": 51.49462,
   "lon": -2.60571,
   "kind": "lake",
   "area": "South West",
   "mode": "isolated",
   "overflows": 0,
   "note": "not on the mapped river network"
  },
  {
   "id": "bw-ukk2301-36051",
   "name": "River Frome at Farleigh Hungerford",
   "lat": 51.31791,
   "lon": -2.28093,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 38,
   "with_path": 38,
   "nearest_h": 6.8,
   "total_weight": 8.76
  },
  {
   "id": "bw-ukg2200-36060",
   "name": "River Teme in Ludlow",
   "lat": 52.36643,
   "lon": -2.72537,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 11,
   "with_path": 11,
   "nearest_h": 1.1,
   "total_weight": 1.8082
  },
  {
   "id": "bw-ukg2100-36070",
   "name": "River Severn at Ironbridge",
   "lat": 52.62933,
   "lon": -2.49179,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 87,
   "with_path": 87,
   "nearest_h": 0.5,
   "total_weight": 5.2651
  },
  {
   "id": "bw-ukg2200-36071",
   "name": "River Severn in Shrewsbury",
   "lat": 52.71037,
   "lon": -2.75671,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 21,
   "with_path": 15,
   "nearest_h": 0.0,
   "total_weight": 7.3815
  },
  {
   "id": "bw-ukd6300-40752",
   "name": "Sandy Lane, Chester",
   "lat": 53.18744,
   "lon": -2.87007,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 13,
   "with_path": 13,
   "nearest_h": 1.9,
   "total_weight": 3.5746
  },
  {
   "id": "bw-ukd1203-45625",
   "name": "Windermere, Lakeside YMCA",
   "lat": 54.3004,
   "lon": -2.96146,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 6,
   "with_path": 6,
   "nearest_h": 26.6,
   "total_weight": 0.1793
  },
  {
   "id": "bw-ukd1203-45650",
   "name": "Windermere, Millerground Landing",
   "lat": 54.38071,
   "lon": -2.92254,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 4,
   "with_path": 4,
   "nearest_h": 14.3,
   "total_weight": 0.344
  },
  {
   "id": "bw-ukd1203-45675",
   "name": "Windermere, Rayrigg Meadow",
   "lat": 54.37816,
   "lon": -2.9225,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 4,
   "with_path": 4,
   "nearest_h": 12.8,
   "total_weight": 0.3507
  },
  {
   "id": "bw-ukd1203-45700",
   "name": "Windermere, Fellfoot",
   "lat": 54.27452,
   "lon": -2.95377,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 6,
   "with_path": 6,
   "nearest_h": 41.8,
   "total_weight": 0.1104
  },
  {
   "id": "bw-ukd1230-45725",
   "name": "Coniston Water, Brown Howe",
   "lat": 54.31134,
   "lon": -3.09122,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 2,
   "with_path": 2,
   "nearest_h": 9.7,
   "total_weight": 0.1736
  },
  {
   "id": "bw-ukd1230-45750",
   "name": "Coniston Water, Boating Centre",
   "lat": 54.36396,
   "lon": -3.06608,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 2,
   "with_path": 2,
   "nearest_h": 0.7,
   "total_weight": 0.26
  },
  {
   "id": "bw-ukd1230-45775",
   "name": "Coniston Water, Monk Coniston",
   "lat": 54.37179,
   "lon": -3.05435,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 2,
   "with_path": 2,
   "nearest_h": 7.2,
   "total_weight": 0.2119
  },
  {
   "id": "bw-ukd1101-45800",
   "name": "Derwent Water at Crow Park",
   "lat": 54.59499,
   "lon": -3.14218,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 22.7,
   "total_weight": 0.4239
  },
  {
   "id": "bw-ukd4308-46501",
   "name": "River Ribble at Edisford Bridge",
   "lat": 53.86847,
   "lon": -2.41728,
   "kind": "river",
   "area": "Lancashire",
   "mode": "river",
   "overflows": 26,
   "with_path": 26,
   "nearest_h": 3.1,
   "total_weight": 3.076
  },
  {
   "id": "lune-devils-bridge",
   "name": "River Lune, Devil's Bridge, Kirkby Lonsdale",
   "lat": 54.1984,
   "lon": -2.5907,
   "kind": "river",
   "area": "Cumbria and the Lake District",
   "mode": "river",
   "overflows": 12,
   "with_path": 12,
   "nearest_h": 2.7,
   "total_weight": 1.9467
  },
  {
   "id": "lune-crook-o-lune",
   "name": "River Lune, Crook o' Lune, Caton",
   "lat": 54.0747,
   "lon": -2.7315,
   "kind": "river",
   "area": "Lancashire",
   "mode": "river",
   "overflows": 26,
   "with_path": 26,
   "nearest_h": 1.3,
   "total_weight": 4.6481
  },
  {
   "id": "wharfe-bolton-abbey",
   "name": "River Wharfe, Bolton Abbey (Cavendish Pavilion)",
   "lat": 53.987,
   "lon": -1.889,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 6,
   "with_path": 6,
   "nearest_h": 15.0,
   "total_weight": 2.0494
  },
  {
   "id": "wharfe-burnsall",
   "name": "River Wharfe, Burnsall",
   "lat": 54.047,
   "lon": -1.953,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 5,
   "with_path": 5,
   "nearest_h": 2.1,
   "total_weight": 3.0957
  },
  {
   "id": "wharfe-appletreewick",
   "name": "River Wharfe, Appletreewick",
   "lat": 54.0331,
   "lon": -1.9207,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 6,
   "with_path": 6,
   "nearest_h": 4.2,
   "total_weight": 3.2701
  },
  {
   "id": "wharfe-linton-falls",
   "name": "River Wharfe, Linton Falls, Grassington",
   "lat": 54.068,
   "lon": -2.0,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 2,
   "with_path": 2,
   "nearest_h": 14.6,
   "total_weight": 0.8633
  },
  {
   "id": "ure-aysgarth",
   "name": "River Ure, Aysgarth Falls",
   "lat": 54.2925,
   "lon": -1.9855,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 4,
   "with_path": 4,
   "nearest_h": 11.5,
   "total_weight": 0.9072
  },
  {
   "id": "ribble-stainforth-force",
   "name": "River Ribble, Stainforth Force",
   "lat": 54.102,
   "lon": -2.279,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 8.2,
   "total_weight": 0.692
  },
  {
   "id": "gordale-janets-foss",
   "name": "Janet's Foss, Gordale Beck, Malham",
   "lat": 54.068,
   "lon": -2.137,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "semerwater",
   "name": "Semerwater",
   "lat": 54.279,
   "lon": -2.133,
   "kind": "lake",
   "area": "Yorkshire",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "ullswater-glenridding",
   "name": "Ullswater, Glenridding",
   "lat": 54.544,
   "lon": -2.948,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 3.1,
   "total_weight": 0.1097
  },
  {
   "id": "ullswater-pooley-bridge",
   "name": "Ullswater, Pooley Bridge",
   "lat": 54.61,
   "lon": -2.816,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 64.7,
   "total_weight": 0.0153
  },
  {
   "id": "brothers-water",
   "name": "Brothers Water",
   "lat": 54.50759,
   "lon": -2.92391,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "buttermere",
   "name": "Buttermere",
   "lat": 54.539,
   "lon": -3.268,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "crummock-water",
   "name": "Crummock Water",
   "lat": 54.558,
   "lon": -3.302,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "loweswater",
   "name": "Loweswater",
   "lat": 54.58336,
   "lon": -3.35492,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "bassenthwaite",
   "name": "Bassenthwaite Lake",
   "lat": 54.6531,
   "lon": -3.21357,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 16,
   "with_path": 16,
   "nearest_h": 12.3,
   "total_weight": 1.3212
  },
  {
   "id": "wastwater",
   "name": "Wastwater",
   "lat": 54.439,
   "lon": -3.296,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "grasmere",
   "name": "Grasmere (lake)",
   "lat": 54.45,
   "lon": -3.02,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 1.6,
   "total_weight": 0.3084
  },
  {
   "id": "rydal-water",
   "name": "Rydal Water",
   "lat": 54.447,
   "lon": -2.989,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 35.7,
   "total_weight": 0.0182
  },
  {
   "id": "loughrigg-tarn",
   "name": "Loughrigg Tarn",
   "lat": 54.4306,
   "lon": -3.0117,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "isolated",
   "overflows": 0,
   "note": "not on the mapped river network"
  },
  {
   "id": "derwent-water-calfclose",
   "name": "Derwent Water, Calfclose Bay",
   "lat": 54.586,
   "lon": -3.133,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 18.5,
   "total_weight": 0.4845
  },
  {
   "id": "elter-water",
   "name": "Elter Water",
   "lat": 54.43,
   "lon": -3.033,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 5.3,
   "total_weight": 0.5916
  },
  {
   "id": "blea-tarn",
   "name": "Blea Tarn, Langdale",
   "lat": 54.4306,
   "lon": -3.0914,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "duddon-birks-bridge",
   "name": "River Duddon, Birks Bridge",
   "lat": 54.372,
   "lon": -3.19,
   "kind": "river",
   "area": "Cumbria and the Lake District",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "eden-armathwaite",
   "name": "River Eden, Armathwaite",
   "lat": 54.8068,
   "lon": -2.7682,
   "kind": "river",
   "area": "Cumbria and the Lake District",
   "mode": "river",
   "overflows": 60,
   "with_path": 60,
   "nearest_h": 11.0,
   "total_weight": 7.2444
  },
  {
   "id": "eden-lazonby",
   "name": "River Eden, Lazonby",
   "lat": 54.755,
   "lon": -2.702,
   "kind": "river",
   "area": "Cumbria and the Lake District",
   "mode": "river",
   "overflows": 65,
   "with_path": 63,
   "nearest_h": 0.4,
   "total_weight": 9.8193
  },
  {
   "id": "tees-low-force",
   "name": "River Tees, Low Force",
   "lat": 54.6463,
   "lon": -2.1511,
   "kind": "river",
   "area": "North East",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "coquet-rothbury",
   "name": "River Coquet, Rothbury",
   "lat": 55.309,
   "lon": -1.911,
   "kind": "river",
   "area": "North East",
   "mode": "river",
   "overflows": 8,
   "with_path": 8,
   "nearest_h": 6.1,
   "total_weight": 1.8782
  },
  {
   "id": "allen-plankey-mill",
   "name": "River Allen, Plankey Mill",
   "lat": 54.953,
   "lon": -2.3215,
   "kind": "river",
   "area": "North East",
   "mode": "river",
   "overflows": 6,
   "with_path": 6,
   "nearest_h": 12.6,
   "total_weight": 1.5563
  },
  {
   "id": "derwent-slippery-stones",
   "name": "River Derwent, Slippery Stones (Howden)",
   "lat": 53.4527,
   "lon": -1.7467,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "dove-dovedale",
   "name": "River Dove, Dovedale stepping stones",
   "lat": 53.054,
   "lon": -1.786,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 20.1,
   "total_weight": 0.7027
  },
  {
   "id": "hatchmere",
   "name": "Hatchmere, Delamere",
   "lat": 53.245,
   "lon": -2.672,
   "kind": "lake",
   "area": "Severn and the Welsh borders",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "wye-hereford",
   "name": "River Wye, Bishop's Meadow, Hereford",
   "lat": 52.051,
   "lon": -2.717,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 14,
   "with_path": 14,
   "nearest_h": 0.2,
   "total_weight": 7.996
  },
  {
   "id": "wye-symonds-yat",
   "name": "River Wye, Symonds Yat",
   "lat": 51.844,
   "lon": -2.642,
   "kind": "river",
   "area": "Severn and the Welsh borders",
   "mode": "river",
   "overflows": 14,
   "with_path": 14,
   "nearest_h": 10.7,
   "total_weight": 3.2358
  },
  {
   "id": "carding-mill-reservoir",
   "name": "Carding Mill Valley Reservoir, Long Mynd",
   "lat": 52.54602,
   "lon": -2.83282,
   "kind": "lake",
   "area": "Severn and the Welsh borders",
   "mode": "lake",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "avon-warleigh-weir",
   "name": "River Avon, Warleigh Weir, Bath",
   "lat": 51.3766,
   "lon": -2.3006,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 185,
   "with_path": 185,
   "nearest_h": 5.5,
   "total_weight": 21.2451
  },
  {
   "id": "frome-tellisford-weir",
   "name": "River Frome, Tellisford Weir",
   "lat": 51.2979,
   "lon": -2.2808,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 38,
   "with_path": 38,
   "nearest_h": 1.4,
   "total_weight": 10.5937
  },
  {
   "id": "dart-spitchwick",
   "name": "River Dart, Spitchwick (Deeper Marsh)",
   "lat": 50.5253,
   "lon": -3.8145,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 26.4,
   "total_weight": 0.5393
  },
  {
   "id": "dart-sharrah-pool",
   "name": "River Dart, Sharrah Pool",
   "lat": 50.5301,
   "lon": -3.8401,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 21.5,
   "total_weight": 0.6422
  },
  {
   "id": "plym-cadover-bridge",
   "name": "River Plym, Cadover Bridge",
   "lat": 50.464,
   "lon": -4.028,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "teign-fingle-bridge",
   "name": "River Teign, Fingle Bridge",
   "lat": 50.696,
   "lon": -3.778,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 9,
   "with_path": 9,
   "nearest_h": 3.5,
   "total_weight": 2.648
  },
  {
   "id": "barle-tarr-steps",
   "name": "River Barle, Tarr Steps",
   "lat": 51.077,
   "lon": -3.618,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "cam-grantchester",
   "name": "River Cam, Grantchester Meadows",
   "lat": 52.1874,
   "lon": 0.1021,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 22,
   "with_path": 22,
   "nearest_h": 5.9,
   "total_weight": 2.5852
  },
  {
   "id": "great-ouse-houghton",
   "name": "River Great Ouse, Houghton Mill",
   "lat": 52.3283,
   "lon": -0.1143,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 65,
   "with_path": 65,
   "nearest_h": 3.0,
   "total_weight": 5.5244
  },
  {
   "id": "waveney-outney-common",
   "name": "River Waveney, Outney Common, Bungay",
   "lat": 52.459,
   "lon": 1.43,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 24,
   "with_path": 22,
   "nearest_h": 0.5,
   "total_weight": 3.1163
  },
  {
   "id": "stour-dedham",
   "name": "River Stour, Dedham",
   "lat": 51.96,
   "lon": 0.995,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 22,
   "with_path": 22,
   "nearest_h": 0.1,
   "total_weight": 2.3913
  },
  {
   "id": "thames-lechlade",
   "name": "River Thames, Lechlade",
   "lat": 51.692,
   "lon": -1.689,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 21,
   "with_path": 21,
   "nearest_h": 8.4,
   "total_weight": 1.2986
  },
  {
   "id": "thames-buscot-weir",
   "name": "River Thames, Buscot Weir",
   "lat": 51.679,
   "lon": -1.665,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 23,
   "with_path": 23,
   "nearest_h": 3.2,
   "total_weight": 1.3758
  },
  {
   "id": "thames-clifton-hampden",
   "name": "River Thames, Clifton Hampden",
   "lat": 51.654,
   "lon": -1.21,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 40,
   "with_path": 39,
   "nearest_h": 0.0,
   "total_weight": 2.4192
  },
  {
   "id": "thames-henley",
   "name": "River Thames, Henley-on-Thames",
   "lat": 51.5383,
   "lon": -0.9005,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 50,
   "with_path": 49,
   "nearest_h": 0.0,
   "total_weight": 2.7672
  },
  {
   "id": "thames-hurley",
   "name": "River Thames, Hurley",
   "lat": 51.549,
   "lon": -0.812,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 43,
   "with_path": 43,
   "nearest_h": 7.5,
   "total_weight": 2.5905
  },
  {
   "id": "thames-port-meadow",
   "name": "River Thames, Port Meadow, Oxford",
   "lat": 51.7715,
   "lon": -1.2905,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 29,
   "with_path": 29,
   "nearest_h": 6.5,
   "total_weight": 1.8118
  },
  {
   "id": "ouse-barcombe-mills",
   "name": "River Ouse (Sussex), Barcombe Mills",
   "lat": 50.9086,
   "lon": 0.0298,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 48,
   "with_path": 48,
   "nearest_h": 9.0,
   "total_weight": 4.4592
  },
  {
   "id": "medway-tonbridge",
   "name": "River Medway, Tonbridge",
   "lat": 51.196,
   "lon": 0.274,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 67,
   "with_path": 67,
   "nearest_h": 0.5,
   "total_weight": 5.1809
  },
  {
   "id": "osm-ullswater-sandwick",
   "name": "Ullswater, near Sandwick",
   "lat": 54.57432,
   "lon": -2.91114,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 1,
   "with_path": 1,
   "nearest_h": 22.7,
   "total_weight": 0.0586
  },
  {
   "id": "osm-windermere-waterhead",
   "name": "Windermere, Waterhead, Ambleside",
   "lat": 54.41897,
   "lon": -2.96235,
   "kind": "lake",
   "area": "Cumbria and the Lake District",
   "mode": "lake",
   "overflows": 4,
   "with_path": 4,
   "nearest_h": 4.4,
   "total_weight": 0.3768
  },
  {
   "id": "osm-wharfe-greenholme",
   "name": "River Wharfe, Greenholme, Burley-in-Wharfedale",
   "lat": 53.92277,
   "lon": -1.74892,
   "kind": "river",
   "area": "Yorkshire",
   "mode": "river",
   "overflows": 25,
   "with_path": 25,
   "nearest_h": 1.1,
   "total_weight": 10.8037
  },
  {
   "id": "osm-rivelin-plunge-pool",
   "name": "River Rivelin, plunge pool, Rivelin Valley",
   "lat": 53.38169,
   "lon": -1.56,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "osm-burbage-padley-gorge",
   "name": "Burbage Brook, Padley Gorge",
   "lat": 53.3186,
   "lon": -1.61385,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "osm-wye-chee-dale",
   "name": "River Wye, Chee Dale, Derbyshire",
   "lat": 53.25426,
   "lon": -1.81488,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 4,
   "with_path": 4,
   "nearest_h": 9.3,
   "total_weight": 1.9495
  },
  {
   "id": "osm-dane-three-shires-head",
   "name": "River Dane, Panniers Pool, Three Shires Head",
   "lat": 53.21374,
   "lon": -1.98745,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "osm-lathkill-dale",
   "name": "River Lathkill, Lathkill Dale, Over Haddon",
   "lat": 53.19044,
   "lon": -1.68894,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "osm-bradford-youlgrave",
   "name": "River Bradford, Bradford Dale, Youlgrave",
   "lat": 53.17316,
   "lon": -1.68596,
   "kind": "river",
   "area": "Peak District and Sheffield",
   "mode": "river",
   "overflows": 0,
   "with_path": 0,
   "nearest_h": null,
   "total_weight": 0
  },
  {
   "id": "osm-great-ouse-overcote",
   "name": "River Great Ouse, Overcote",
   "lat": 52.32303,
   "lon": -0.0039,
   "kind": "river",
   "area": "East of England",
   "mode": "river",
   "overflows": 58,
   "with_path": 58,
   "nearest_h": 4.1,
   "total_weight": 5.6439
  },
  {
   "id": "osm-thames-long-bridges",
   "name": "River Thames, Long Bridges, Oxford",
   "lat": 51.73783,
   "lon": -1.24522,
   "kind": "river",
   "area": "Thames Valley",
   "mode": "river",
   "overflows": 45,
   "with_path": 45,
   "nearest_h": 4.7,
   "total_weight": 2.0454
  },
  {
   "id": "osm-wey-waverley",
   "name": "River Wey, Waverley, near Farnham",
   "lat": 51.2076,
   "lon": -0.76378,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 5,
   "with_path": 4,
   "nearest_h": 0.5,
   "total_weight": 2.0986
  },
  {
   "id": "osm-test-chilbolton",
   "name": "River Test, Chilbolton Cow Common",
   "lat": 51.15903,
   "lon": -1.44483,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 2,
   "with_path": 2,
   "nearest_h": 19.8,
   "total_weight": 0.2752
  },
  {
   "id": "osm-itchen-compton-lock",
   "name": "River Itchen, Compton Lock",
   "lat": 51.02718,
   "lon": -1.32219,
   "kind": "river",
   "area": "South and South East",
   "mode": "river",
   "overflows": 3,
   "with_path": 3,
   "nearest_h": 4.0,
   "total_weight": 1.1282
  },
  {
   "id": "osm-teign-drogo-weir",
   "name": "River Teign, Drogo Weir",
   "lat": 50.69205,
   "lon": -3.81044,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 8,
   "with_path": 8,
   "nearest_h": 3.5,
   "total_weight": 2.8187
  },
  {
   "id": "osm-dart-dartington",
   "name": "River Dart, Dartington Pontoon",
   "lat": 50.4394,
   "lon": -3.69136,
   "kind": "river",
   "area": "South West",
   "mode": "river",
   "overflows": 20,
   "with_path": 20,
   "nearest_h": 1.6,
   "total_weight": 4.3789
  }
 ]
}