{"name":"Shiawassee Basin Nature Preserve","slug":"shiawassee-basin-nature-preserve","river_id":null,"basis":"public-land","bbox":[-83.5633,42.7499,-83.54293,42.77219],"generated_at":"2026-09-22T23:32:07Z","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":"shiawassee-river"},"geometry":{"type":"MultiLineString","coordinates":[[[-83.5159,42.73185],[-83.51794,42.73218000000004],[-83.51882,42.73489000000002]],[[-83.58929,42.78032000000001],[-83.5927,42.78147000000002]],[[-83.55629,42.757519999999985],[-83.55991,42.759970000000024],[-83.56458,42.76529]],[[-83.52483,42.754730000000016],[-83.52599,42.752880000000054],[-83.52908,42.752219999999994],[-83.53255,42.753710000000005],[-83.53359,42.75305000000002]],[[-83.59594,42.785700000000034],[-83.5978,42.78438999999999]],[[-83.51887,42.74921],[-83.51985,42.75129999999995]],[[-83.58437,42.777600000000014],[-83.58929,42.78032000000001]],[[-83.51112,42.73075000000003],[-83.5135,42.732240000000026],[-83.5159,42.73185]],[[-83.60379,42.781339999999986],[-83.60399,42.781039999999976]],[[-83.5978,42.78438999999999],[-83.59688,42.78336999999997]],[[-83.51985,42.75129999999995],[-83.52092,42.75377],[-83.52483,42.754730000000016]],[[-83.56671,42.76597000000002],[-83.56811,42.76589]],[[-83.54389,42.75520000000003],[-83.54712,42.75522000000002],[-83.54769,42.75601999999999]],[[-83.58007,42.77476],[-83.58105000000002,42.776649999999954],[-83.58437,42.777600000000014]],[[-83.56811,42.76589],[-83.57417,42.766890000000046],[-83.57692,42.77131000000001],[-83.58021,42.77238000000002],[-83.58007,42.77476]],[[-83.56458,42.76529],[-83.56586,42.76589999999997],[-83.56671,42.76597000000002]],[[-83.61943,42.78286999999997],[-83.61961,42.78348000000003]],[[-83.51882,42.73489000000002],[-83.51847,42.73852000000001],[-83.52112,42.74135999999999],[-83.51839,42.74581999999998],[-83.51887,42.74921]],[[-83.61961,42.78348000000003],[-83.62041355693512,42.78443381756154]],[[-83.53836,42.752190000000006],[-83.5403,42.755030000000005],[-83.54217,42.75497000000001],[-83.54389,42.75520000000003]],[[-83.60504,42.78054000000001],[-83.6057,42.78123999999996],[-83.60824000000001,42.78098000000004],[-83.60976,42.77859000000001],[-83.61232,42.779769999999964],[-83.61405,42.78225000000002],[-83.6178,42.78095],[-83.61943,42.78286999999997]],[[-83.59688,42.78336999999997],[-83.59922,42.78140000000005],[-83.60379,42.781339999999986]],[[-83.60399,42.781039999999976],[-83.60504,42.78054000000001]],[[-83.5927,42.78147000000002],[-83.59341,42.78535999999994],[-83.59437,42.78609999999998],[-83.5949,42.78587000000003],[-83.59585000000001,42.78562999999998],[-83.59594,42.785700000000034]],[[-83.53359,42.75305000000002],[-83.53426,42.75139999999996],[-83.5359,42.75079999999999],[-83.53836,42.752190000000006]],[[-83.54769,42.75601999999999],[-83.55587,42.756050000000016],[-83.55629,42.757519999999985]]]}}]},"land":{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"Shiawassee Basin Nature Preserve","owner":"Local government land","subject":true},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.552941,42.75533099999995],[-83.558179,42.75626199999997],[-83.558303,42.76162999999994],[-83.563143,42.76148300000002],[-83.562227,42.77006500000001],[-83.559202,42.770133000000015],[-83.559279,42.772192000000004],[-83.558274,42.772185],[-83.55815600000001,42.76520699999998],[-83.545357,42.76538699999996],[-83.545367,42.764581999999976],[-83.543151,42.764567000000014],[-83.542933,42.75803499999995],[-83.552908,42.75783500000005],[-83.552941,42.75533099999995]]],[[[-83.557339,42.749903999999994],[-83.557471,42.75545199999998],[-83.547519,42.75395200000004],[-83.547464,42.751082000000025],[-83.552468,42.749930000000006],[-83.557339,42.749903999999994]]]]}},{"type":"Feature","properties":{"name":"Holly State Recreation Area","owner":"Local Government land"},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.534401,42.80422499999998],[-83.52921200000002,42.80832100000002],[-83.535459,42.80706999999998],[-83.54471,42.814644999999985],[-83.539772,42.816188999999994],[-83.53993358768933,42.82927709631251],[-83.51002657189804,42.81458085748636],[-83.50961,42.79327399999998],[-83.534401,42.80422499999998]],[[-83.531513,42.81489499999997],[-83.529765,42.81652000000002],[-83.531586,42.81657299999996],[-83.531513,42.81489499999997]]],[[[-83.553901,42.79412399999994],[-83.579197,42.794571000000005],[-83.580664,42.80023300000001],[-83.583498,42.79850199999996],[-83.588691,42.802994999999996],[-83.5906,42.79994799999999],[-83.596582,42.80955999999998],[-83.600023,42.80819300000001],[-83.598236,42.81320499999998],[-83.6029763947512,42.81401173266462],[-83.59509031054019,42.820240494443276],[-83.593778,42.81065600000001],[-83.57027,42.81353399999996],[-83.546292,42.793054000000026],[-83.55507,42.786874000000005],[-83.553901,42.79412399999994]],[[-83.562309,42.797659999999986],[-83.55821,42.80138899999996],[-83.558928,42.801821000000004],[-83.563817,42.80176300000001],[-83.562309,42.797659999999986]],[[-83.581671,42.80139800000005],[-83.577519,42.803913000000044],[-83.577567,42.80548699999998],[-83.581671,42.80139800000005]]],[[[-83.575478,42.82872999999994],[-83.570454,42.818892999999974],[-83.577454,42.815050000000014],[-83.578187,42.821504000000004],[-83.59115400594457,42.822940295587806],[-83.575478,42.82872999999994]]]]}},{"type":"Feature","properties":{"name":"Indian Springs Metropark","owner":"Local Government land"},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.515697,42.70580399999998],[-83.510251,42.70534900000001],[-83.514809,42.71127699999996],[-83.506976,42.71907299999998],[-83.50664300000001,42.728843999999945],[-83.495238,42.729103999999964],[-83.49203133808885,42.72628622563392],[-83.50820387257437,42.705709735404525],[-83.5101984160619,42.704147004768025],[-83.513224,42.704972000000005],[-83.515658,42.70045800000002],[-83.529807,42.70185700000003],[-83.525537,42.70378699999999],[-83.52835,42.71100799999997],[-83.516033,42.711248000000005],[-83.515697,42.70580399999998]]],[[[-83.510645,42.704128],[-83.5102102590552,42.704137725748225],[-83.51063100901592,42.703808066927465],[-83.510645,42.704128]]]]}},{"type":"Feature","properties":{"name":"Shiawassee Basin Preserve","owner":"Springfield Township"},"geometry":{"type":"MultiPolygon","coordinates":[[[[-83.544389,42.76522300000003],[-83.542424,42.75361299999998],[-83.56162400000001,42.75779100000006],[-83.567676,42.764472999999946],[-83.544389,42.76522300000003]]],[[[-83.547434,42.754008],[-83.556105,42.749926999999985],[-83.556223,42.755489000000026],[-83.547434,42.754008]]]]}}]}}