{"name":"Thompson's Harbor","slug":"thompson-s-harbor","river_id":null,"basis":"public-land","bbox":[-83.6398,45.32845,-83.52264,45.37069],"generated_at":"2026-09-22T23:32:35Z","breaks":[58,64,70],"thermal":{"Cold":{"color":"#0f6e56","dark":"#3f9b7f"},"Cold-transitional":{"color":"#3d7c9c","dark":"#6aa6c4"},"Cool":{"color":"#c98a3b","dark":"#d9a256"},"Warm":{"color":"#a94b32","dark":"#c46a4f"},"Unknown":{"color":"#9a9384","dark":"#7c766a"}},"sites":[],"river":{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"july_class":"Warm","stream_id":"grand-lake-outlet"},"geometry":{"type":"MultiLineString","coordinates":[[[-83.55645,45.31584],[-83.55871,45.318519999999985],[-83.55901,45.32148999999997]],[[-83.56206,45.33888999999999],[-83.56432,45.34050999999998],[-83.56731,45.339420000000004],[-83.57076,45.34133000000002],[-83.57101,45.33993000000002],[-83.57296,45.339269999999985],[-83.57367,45.34271],[-83.57626000000002,45.343699999999956],[-83.57652,45.34586]],[[-83.49617,45.29308999999995],[-83.5003,45.29314000000001],[-83.51046,45.29883],[-83.51747,45.29883999999999],[-83.52102,45.29981999999997],[-83.52421,45.30192000000001],[-83.52589,45.30586000000002],[-83.53102,45.30693999999996],[-83.53475,45.30946000000006],[-83.5429,45.30750999999997],[-83.54929,45.30952000000002],[-83.55258,45.314450000000036],[-83.55645,45.31584]],[[-83.49309241048564,45.28981143222483],[-83.49617,45.29308999999995]],[[-83.56081,45.33574999999998],[-83.56206,45.33888999999999]],[[-83.56135,45.33310000000001],[-83.56033,45.33347],[-83.56081,45.33574999999998]],[[-83.56063,45.33217999999999],[-83.56135,45.33310000000001]],[[-83.55901,45.32148999999997],[-83.55686,45.32429000000004],[-83.56063,45.33217999999999]]]}}]},"land":{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"Thompson's Harbor","owner":"Michigan DNR","subject":true},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.536115,45.357549],[-83.529485,45.35426400000001],[-83.522643,45.349269],[-83.5313,45.34992400000003],[-83.53274,45.350944999999996],[-83.532829,45.35270999999997],[-83.53605600000002,45.35395499999999],[-83.536115,45.357549]]],[[[-83.533971,45.33363400000004],[-83.540847,45.33368800000002],[-83.540863,45.33501300000001],[-83.533992,45.334902000000035],[-83.533971,45.33363400000004]]],[[[-83.545915,45.35829700000005],[-83.541356,45.35820399999997],[-83.541274,45.35315000000001],[-83.546257,45.35325799999998],[-83.547112,45.35626200000002],[-83.545915,45.35829700000005]]],[[[-83.59705800000002,45.35079699999994],[-83.600241,45.35099600000003],[-83.602399,45.353127000000036],[-83.601433,45.35482000000002],[-83.602789,45.355154999999975],[-83.602812,45.356845],[-83.607819,45.35675400000001],[-83.604448,45.35896399999996],[-83.609562,45.35893700000004],[-83.608332,45.362004000000006],[-83.61434500000001,45.35987100000004],[-83.618028,45.363656000000006],[-83.622351,45.360610000000015],[-83.624063,45.36258000000003],[-83.626274,45.363239999999934],[-83.62616,45.364439],[-83.630063,45.36352000000004],[-83.630706,45.36500399999998],[-83.632402,45.36528099999999],[-83.635956,45.36348499999997],[-83.638668,45.363456],[-83.639105,45.36496299999999],[-83.636663,45.36801299999997],[-83.638255,45.36824299999997],[-83.63808700000001,45.369312999999984],[-83.639783,45.36983800000006],[-83.639798,45.37068800000003],[-83.638823,45.37033999999999],[-83.63527200000001,45.36699200000001],[-83.63118,45.36516499999999],[-83.62714,45.36486699999998],[-83.621592,45.363630000000015],[-83.615752,45.36451700000001],[-83.610112,45.363075],[-83.605001,45.360478],[-83.603102,45.35774399999998],[-83.601771,45.357859],[-83.602018,45.35546300000004],[-83.598404,45.35178899999998],[-83.595649,45.35178899999998],[-83.593855,45.35446199999997],[-83.591935,45.35436800000003],[-83.589732,45.35287800000002],[-83.58871,45.35061899999996],[-83.587342,45.35041800000001],[-83.586719,45.35053000000001],[-83.58782700000002,45.350627000000024],[-83.585994,45.351712999999975],[-83.584699,45.348364999999966],[-83.583117,45.348932],[-83.583218,45.35125799999998],[-83.585727,45.353356000000026],[-83.584326,45.35610600000002],[-83.579893,45.35089199999994],[-83.576188,45.34995400000003],[-83.571524,45.347326000000024],[-83.570856,45.345942999999984],[-83.567442,45.346712000000004],[-83.568217,45.347853999999984],[-83.565798,45.351299999999995],[-83.555117,45.34936600000003],[-83.546259,45.35325200000003],[-83.544888,45.351186],[-83.545236,45.34821199999998],[-83.546356,45.34962099999994],[-83.551477,45.34980099999998],[-83.551416,45.34734400000002],[-83.55547200000001,45.34773399999999],[-83.556523,45.34608200000001],[-83.55869,45.346306],[-83.56068,45.34532600000004],[-83.563354,45.346283999999976],[-83.569805,45.344053],[-83.573726,45.344317000000004],[-83.576673,45.34591999999997],[-83.577121,45.34397100000002],[-83.579335,45.34354099999998],[-83.581125,45.34635900000001],[-83.584534,45.34816899999999],[-83.590072,45.34742599999998],[-83.595403,45.35182000000002],[-83.59705800000002,45.35079699999994]],[[-83.585765,45.349376000000014],[-83.585938,45.349114],[-83.585307,45.349000999999994],[-83.585765,45.349376000000014]],[[-83.593972,45.35395799999999],[-83.593646,45.35389900000002],[-83.593627,45.35410999999998],[-83.593972,45.35395799999999]]],[[[-83.547261,45.33373399999998],[-83.548527,45.333742000000015],[-83.548565,45.335256000000044],[-83.547282,45.33521200000003],[-83.547261,45.33373399999998]]],[[[-83.566432,45.33204399999996],[-83.566524,45.33567799999995],[-83.561392,45.33569299999998],[-83.561303,45.33205599999994],[-83.566432,45.33204399999996]]],[[[-83.566432,45.33204399999996],[-83.566353,45.32851199999997],[-83.571478,45.32844899999997],[-83.571572,45.33203000000001],[-83.566432,45.33204399999996]]],[[[-83.602571,45.335304],[-83.602609,45.338916],[-83.592299,45.33907499999997],[-83.592242,45.33546799999997],[-83.602571,45.335304]]],[[[-83.617594,45.33513199999997],[-83.617664,45.33871799999998],[-83.607631,45.33884999999998],[-83.607582,45.33524600000002],[-83.617594,45.33513199999997]]]]}},{"type":"Feature","properties":{"name":"Atlanta State Forest Area","owner":"Michigan DNR"},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.534142,45.32502699999997],[-83.533228,45.325431],[-83.533808,45.32497899999998],[-83.534142,45.32502699999997]]],[[[-83.551356,45.325145000000006],[-83.551705,45.32480800000006],[-83.551993,45.325023000000016],[-83.551356,45.325145000000006]]],[[[-83.616951,45.309858000000034],[-83.622171,45.309838999999954],[-83.622337,45.317038000000025],[-83.617175,45.317091999999995],[-83.617268,45.32070100000004],[-83.627484,45.32061899999999],[-83.627551,45.32421700000002],[-83.632669,45.32416400000002],[-83.632831,45.33497599999994],[-83.617554,45.335124999999955],[-83.617414,45.32790599999999],[-83.602297,45.328029000000065],[-83.602542,45.335288999999996],[-83.576787,45.33564699999997],[-83.57692,45.32496600000003],[-83.568843,45.32296699999997],[-83.571069,45.310578000000014],[-83.566031,45.31069800000003],[-83.565515,45.296420000000005],[-83.560588,45.29655799999997],[-83.55797,45.28915300000006],[-83.567286,45.28884300000002],[-83.565494,45.295873000000036],[-83.572786,45.29008100000005],[-83.611203,45.291850000000025],[-83.60745134858348,45.295486495276776],[-83.611496,45.29907899999995],[-83.6069495813858,45.299113651226456],[-83.611463,45.29909600000003],[-83.611621,45.30271100000003],[-83.621835,45.30262100000001],[-83.616951,45.309858000000034]],[[-83.606349,45.29911600000001],[-83.60637892581032,45.29911588296518],[-83.606223,45.295498999999985],[-83.606349,45.29911600000001]]],[[[-83.611378,45.29547800000004],[-83.61644700000001,45.29544599999994],[-83.616579,45.29902499999994],[-83.611508,45.29906399999997],[-83.611378,45.29547800000004]]],[[[-83.638459,45.302563],[-83.63815,45.29542699999997],[-83.642994,45.295469000000026],[-83.643164,45.302581999999994],[-83.638459,45.302563]]],[[[-83.644276,45.334898000000024],[-83.639224,45.334923999999965],[-83.639147,45.331332999999994],[-83.644198,45.331340999999995],[-83.644276,45.334898000000024]]],[[[-83.6543,45.32773400000003],[-83.664555,45.331330999999984],[-83.66464000000002,45.33487700000003],[-83.649426,45.33491300000001],[-83.649313,45.331333999999934],[-83.644242,45.33130999999999],[-83.649162,45.32412100000002],[-83.6542,45.324138],[-83.6543,45.32773400000003]]],[[[-83.664577,45.331315000000025],[-83.664491,45.32772099999999],[-83.674663,45.327670999999974],[-83.674723,45.331239],[-83.664577,45.331315000000025]]]]}},{"type":"Feature","properties":{"name":"Thompson's Harbor State Park","owner":"State of Michigan"},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.607788,45.353198999999975],[-83.584534,45.34816899999999],[-83.580002,45.34361499999997],[-83.569805,45.344053],[-83.545236,45.34821199999998],[-83.54625,45.353235999999995],[-83.541108,45.35320000000001],[-83.54034500000002,45.35826400000002],[-83.525256,45.345810000000014],[-83.520256,45.34573899999999],[-83.520042,45.33468399999994],[-83.54087100000001,45.33469999999998],[-83.54088,45.33150999999999],[-83.546012,45.331814999999985],[-83.545939,45.335366000000036],[-83.56166900000001,45.335315],[-83.566281,45.331233000000005],[-83.572819,45.33169000000002],[-83.572913,45.33555599999996],[-83.576413,45.33185299999996],[-83.59238200000001,45.335477000000026],[-83.592472,45.33902299999997],[-83.602542,45.33899799999993],[-83.602538,45.335305000000005],[-83.607282,45.33526799999999],[-83.60737400000001,45.33890400000001],[-83.618204,45.338894],[-83.618172,45.335187999999995],[-83.639123,45.335037000000014],[-83.63978200000001,45.36983800000001],[-83.637812,45.36293599999996],[-83.63167300000002,45.365296999999956],[-83.622834,45.36066700000003],[-83.618028,45.363656000000006],[-83.61434500000001,45.35987100000004],[-83.608332,45.362004000000006],[-83.609562,45.35893700000004],[-83.604448,45.35896399999996],[-83.607788,45.353198999999975]]],[[[-83.602764,45.35363300000004],[-83.602785,45.35515399999997],[-83.601433,45.35482000000002],[-83.602764,45.35363300000004]]]]}}]}}