{
    "type":"Feature",
    "properties":{
        "fid":13318,
        "id":"503711",
        "uri":"https://geoconnex.us/ref/mainstems/503711",
        "featuretype":"['https://www.opengis.net/def/schema/hy_features/hyf/HY_FlowPath', 'https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody']",
        "downstream_mainstem_id":"https://geoconnex.us/ref/mainstems/341238",
        "encompassing_mainstem_basins":"['https://geoconnex.us/ref/mainstems/341238', 'https://geoconnex.us/ref/mainstems/329560', 'https://geoconnex.us/ref/mainstems/312091']",
        "name_at_outlet":"Lake Bayou",
        "name_at_outlet_gnis_id":672249,
        "head_nhdpv2_comid":"https://geoconnex.us/nhdplusv2/comid/17951631",
        "outlet_nhdpv2_comid":"https://geoconnex.us/nhdplusv2/comid/17951675",
        "head_nhdpv2huc12":"",
        "outlet_nhdpv2huc12":"",
        "lengthkm":9.4,
        "outlet_drainagearea_sqkm":81.5,
        "head_rf1id":null,
        "outlet_rf1id":null,
        "head_nhdpv1_comid":17951631,
        "outlet_nhdpv1_comid":17951675,
        "head_2020huc12":"080302070101",
        "outlet_2020huc12":"080302070101",
        "superseded":false,
        "new_mainstemid":"",
        "datasets":[
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Kjeldahl nitrogen at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Kjeldahl nitrogen",
                "variableUnit":"milligrams per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Kjeldahl nitrogen&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Orthophosphate at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Orthophosphate",
                "variableUnit":"milligrams per liter as phosphate",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Orthophosphate&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Oxygen at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Oxygen",
                "variableUnit":"milligrams per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Oxygen&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Phosphate-phosphorus at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Phosphate-phosphorus",
                "variableUnit":"milligrams per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Phosphate-phosphorus&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Barometric pressure at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Barometric pressure",
                "variableUnit":"millimeters of mercury",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Barometric pressure&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Nitrogen, mixed forms (NH3), (NH4), organic, (NO2) and (NO3) at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Nitrogen, mixed forms (NH3), (NH4), organic, (NO2) and (NO3)",
                "variableUnit":"milligrams per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Nitrogen, mixed forms (NH3), (NH4), organic, (NO2) and (NO3)&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Phosphorus at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Phosphorus",
                "variableUnit":"parts per billion",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Phosphorus&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Pheophytin a at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Pheophytin a",
                "variableUnit":"micrograms per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Pheophytin a&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Temperature, water at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Temperature, water",
                "variableUnit":"degrees Celsius",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Temperature, water&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Height, gage at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Height, gage",
                "variableUnit":"feet",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Height, gage&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Specific conductance at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Specific conductance",
                "variableUnit":"microsiemens per centimeter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Specific conductance&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Ammonia and ammonium at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Ammonia and ammonium",
                "variableUnit":"Unknown",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Ammonia and ammonium&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"pH at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"pH",
                "variableUnit":"Unknown",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=pH&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Turbidity at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Turbidity",
                "variableUnit":"Jackson turbidity units",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Turbidity&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Organic Nitrogen at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Organic Nitrogen",
                "variableUnit":"milligrams per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Organic Nitrogen&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Inorganic nitrogen (nitrate and nitrite) at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Inorganic nitrogen (nitrate and nitrite)",
                "variableUnit":"milligrams per liter as nitrogen",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Inorganic nitrogen (nitrate and nitrite)&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            },
            {
                "monitoringLocation":"https://geoconnex.us/iow/wqp/USGS-341508090302500",
                "siteName":"USGS-341508090302500",
                "datasetDescription":"Chlorophyll a at USGS-341508090302500",
                "type":"Stream",
                "url":"https://www.waterqualitydata.us/provider/NWIS/USGS-MS/USGS-341508090302500/",
                "variableMeasured":"Chlorophyll a",
                "variableUnit":"micrograms per liter",
                "measurementTechnique":"observation",
                "temporalCoverage":"2006-01-01T00:00:00Z/2006-12-31T00:00:00Z",
                "distributionName":"Water Quality Portal",
                "distributionURL":"https://www.waterqualitydata.us/data/Result/search?siteid=USGS-341508090302500&CharacteristicName=Chlorophyll a&mimeType=csv",
                "distributionFormat":"text/comma-separated-values",
                "wkt":"POINT (-90.5069444 34.2522222)"
            }
        ]
    },
    "id":"503711",
    "geometry":{
        "type":"LineString",
        "coordinates":[
            [
                -90.54232436990009,
                34.27244108013566
            ],
            [
                -90.53810716990677,
                34.27060681347197
            ],
            [
                -90.53791176990705,
                34.27285008013509
            ],
            [
                -90.52839576992181,
                34.274903280131916
            ],
            [
                -90.52652316992476,
                34.27261248013548
            ],
            [
                -90.51626670327403,
                34.271482213470456
            ],
            [
                -90.51018196995011,
                34.26451728014798
            ],
            [
                -90.50963736995097,
                34.2594574134891
            ],
            [
                -90.50669150328889,
                34.2563870801606
            ],
            [
                -90.50631010328948,
                34.25315881349895
            ],
            [
                -90.50846996995278,
                34.24990141350409
            ],
            [
                -90.51178050328093,
                34.248348213506425
            ],
            [
                -90.54792190322485,
                34.24826588017321
            ]
        ]
    },
    "prev":"503697",
    "next":"503748",
    "links":[
        {
            "type":"application/json",
            "rel":"root",
            "title":"The landing page of this server as JSON",
            "href":"https://reference.geoconnex.us?f=json"
        },
        {
            "type":"text/html",
            "rel":"root",
            "title":"The landing page of this server as HTML",
            "href":"https://reference.geoconnex.us?f=html"
        },
        {
            "rel":"self",
            "type":"application/geo+json",
            "title":"This document as JSON",
            "href":"https://geoconnex.us/ref/mainstems/503711?f=json"
        },
        {
            "rel":"alternate",
            "type":"application/ld+json",
            "title":"This document as RDF (JSON-LD)",
            "href":"https://geoconnex.us/ref/mainstems/503711?f=jsonld"
        },
        {
            "rel":"alternate",
            "type":"text/html",
            "title":"This document as HTML",
            "href":"https://geoconnex.us/ref/mainstems/503711?f=html"
        },
        {
            "rel":"collection",
            "type":"application/json",
            "title":"Reference Mainstems",
            "href":"https://reference.geoconnex.us/collections/mainstems"
        },
        {
            "rel":"prev",
            "type":"application/json",
            "href":"https://reference.geoconnex.us/collections/mainstems/items/503697?f=json"
        },
        {
            "rel":"next",
            "type":"application/json",
            "href":"https://reference.geoconnex.us/collections/mainstems/items/503748?f=json"
        }
    ]
}