Layers:

Layer: Metals geometric mean (0)

Name: Metals geometric mean

Display Field: STATIONID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This layer displays the geometric mean of certain “metals” grab samples (mg/l) collected since 1991. Older data for metals were included in the calculations as metals are collected less frequently by WDNR, hence removing values >10 years old would significantly shrink the dataset. Data were downloaded from the WDNR’s Surface Water Integrated Monitoring System (SWIMS) database on July 23rd, 2018. Any “flagged” sample was removed from the dataset (e.g. holding time exceeded, etc.). Any result that was returned as below detection limit was set to 0.001 (mg/l or µg/l, depending on common reporting units for each parameter). NR 106.06(4)(e)(3) indicates that samples below detection limit should be set to zero, but a geometric means cannot be calculated with negative values or zeros, so these samples were set to a very small positive number.

Copyright Text: Ben Kort, Mike Shupryt, WQ Bureau

Default Visibility: false

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Supported Query Formats: JSON, geoJSON

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Supports Statistics: true

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Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
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YMin: 226448.0537
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YMax: 690848.422
Spatial Reference: 3071  (3071)



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• GEOMEAN_HARDNESS_MG_L ( type: esriFieldTypeInteger, alias: Hardness (mg/L), geometric mean )
• GEOMEAN_ARSENIC_UG_L ( type: esriFieldTypeString, alias: Arsenic (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_SELENIUM_UG_L ( type: esriFieldTypeString, alias: Selenium (ug/L), geometric mean, length: 1073741822 )
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• GEOMEAN_NICKEL_UG_L ( type: esriFieldTypeString, alias: Nickel (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_ZINC_UG_L ( type: esriFieldTypeString, alias: Zinc (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_CADMIUM_UG_L ( type: esriFieldTypeString, alias: Cadmium (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_LEAD_UG_L ( type: esriFieldTypeString, alias: Lead (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_CHROMIUM_UG_L ( type: esriFieldTypeString, alias: Chromium (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_COPPER_UG_L ( type: esriFieldTypeString, alias: Copper (ug/L), geometric mean, length: 1073741822 )
• GEOMEAN_MANGANESE_UG_L ( type: esriFieldTypeString, alias: Manganese (ug/L), geometric mean, length: 1073741822 )
• NUMSAMP_HARDNESS ( type: esriFieldTypeInteger, alias: Number of samples for Hardness )
• NUMSAMP_ARSENIC ( type: esriFieldTypeString, alias: Number of samples for Arsenic, length: 1073741822 )
• NUMSAMP_SELENIUM ( type: esriFieldTypeString, alias: Number of samples for Selenium, length: 1073741822 )
• NUMSAMP_BARIUM ( type: esriFieldTypeString, alias: Number of samples for Barium, length: 1073741822 )
• NUMSAMP_NICKEL ( type: esriFieldTypeString, alias: Number of samples for Nickel, length: 1073741822 )
• NUMSAMP_ZINC ( type: esriFieldTypeString, alias: Number of samples for Zinc, length: 1073741822 )
• NUMSAMP_CADMIUM ( type: esriFieldTypeString, alias: Number of samples for Cadmium, length: 1073741822 )
• NUMSAMP_LEAD ( type: esriFieldTypeString, alias: Number of samples for Lead, length: 1073741822 )
• NUMSAMP_CHROMIUM ( type: esriFieldTypeString, alias: Number of samples for Chromium, length: 1073741822 )
• NUMSAMP_COPPER ( type: esriFieldTypeString, alias: Number of samples for Copper, length: 1073741822 )
• NUMSAMP_MANGANESE ( type: esriFieldTypeString, alias: Number of samples for Manganese, length: 1073741822 )

Layer: USGS Streamflow Gauge 7-day minimums (1)

Name: USGS Streamflow Gauge 7-day minimums

Display Field: STATION_ID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This layer displays empirically derived low flow metrics from sites with continuous USGS flow gauges. Data are displayed for two commonly used low flow statistics, 7Q2 and 7Q10, which is the minimum seven-day mean streamflow (cfs) that occurs every two, and ten years, respectively. USGS gauges in Wisconsin were found by downloading the “USGS Gage Stations” available on the WDNR Surface Water Data Viewer. For each USGS gage daily streamflow data were download using the dataRetrieval (v2.7.4) R package on August 6th, 2018. Data are available for each metric if the minimum required data exists (i.e. two years of record for 7Q2 and ten years for 7Q10). A full year of record was limited to years were at least 325 daily streamflow measurements were recorded. However, users should beware that values calculated from the minimum required data maybe unreliable depending on the specific weather patterns in that timeframe. Gauges with three times the minimum required data (i.e. six years for 7Q2 and 30 years for 7Q10) will likely provide more reliable estimates. 7Q2 and 7Q10 estimates are available for the majority of stream reaches on the Wisconsin Hydrography Database estimated from USGS “Low-Flow Characteristics of Streams…” USGS Water Resource Investigations, or WDNR calculations created using the USGS methods. See the HYDRO_VA_7QX_Flow layer available on the WPDES Viewer for these additional low flow metrics.

Copyright Text: Ben Kort, Mike Shupryt, WQ Bureau

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

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Max Scale: 1

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
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YMin: 226362.22327551153
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Spatial Reference: 3071  (3071)



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• STATION_ID ( type: esriFieldTypeString, alias: Station Id, length: 50 )
• F7Q2_EMPIRICAL ( type: esriFieldTypeDouble, alias: 7-day, 2-year low flow (cfs) )
• F7Q10_EMPIRICAL ( type: esriFieldTypeDouble, alias: 7-day, 10-year low flow (cfs) )
• F30Q5_EMPIRICAL ( type: esriFieldTypeDouble, alias: 30-day, 5-year low flow )
• F1Q10_EMPIRICAL ( type: esriFieldTypeDouble, alias: 1-day, 10-year low flow )
• ANNUAL_BASEFLOW_AVG ( type: esriFieldTypeDouble, alias: Annual Baseflow Average )
• YEARS_OF_RECORD ( type: esriFieldTypeInteger, alias: Years of Record )
• LAST_YEAR ( type: esriFieldTypeString, alias: Last Year, length: 5 )
• FIRST_YEAR ( type: esriFieldTypeString, alias: First Year, length: 5 )
• GAGENAME ( type: esriFieldTypeString, alias: Gage Name, length: 255 )
• DRAINAGEAREA_MI2 ( type: esriFieldTypeInteger, alias: Drainage Area mi2 )

Layer: Chloride geometric mean (2)

Name: Chloride geometric mean

Display Field: STATION_ID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This layer displays the geometric mean of chloride grab samples (mg/l) collected since 2008. Data were downloaded from the WDNR’s Surface Water Integrated Monitoring System (SWIMS) database on July 17th, 2018. Only samples collected between May 1st and October 31st were used in the calculation to avoid samples that were collected as part of a runoff/snowmelt event-based sampling effort. Any “flagged” sample was removed from the dataset (e.g. holding time exceeded, etc.). Any result that was returned as below detection limit was set to 0.001 mg/l. NR 106.06(4)(e)(3) indicates that samples below detection limit should be set to zero, but a geometric means cannot be calculated with negative values or zeros, so these samples were set to a very small positive number.

Copyright Text: Ben Kort, Mike Shupryt, WQ Bureau

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

Min Scale: 10000000

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Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
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YMin: 226448.0537
XMax: 735916.9841
YMax: 705404.6928
Spatial Reference: 3071  (3071)



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• LAST_UPDATE ( type: esriFieldTypeDate, alias: LAST_UPDATE, length: 8 )

Layer: NR217 Calculated TP Data (4)

Name: NR217 Calculated TP Data

Display Field: PRIMARY_STATION_NAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: The data used in this layer were extracted from the Wisconsin DNR Surface Water Integrated Monitoring System (SWIMS). The downloaded (February 2, 2011) contained total phosphorus data from all SWIMS stations collected since January 1, 2000.

Copyright Text: WI Dept. of Natural Resources, Division of Water

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

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YMin: 226127.331900001
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Spatial Reference: 3071  (3071)



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• WATERBODY_NAME ( type: esriFieldTypeString, alias: Waterbody Name, length: 4000 )
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Layer: Min. Seven Day Streamflow (cfs) (3)

Name: Min. Seven Day Streamflow (cfs)

Display Field: ROW_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Database (WHD) with a watershed area of 150 square miles or less. Data are displayed for two commonly used low flow statistics, 7Q2 and 7Q10, which is the minimum seven-day mean streamflow (cfs) that occurs every two, and ten years, respectively. USGS gauges in Wisconsin were found by downloading the “USGS Gage Stations” layer available on the WDNR Surface Water Data Viewer. For each USGS gage daily streamflow data were download using the dataRetrieval (v2.7.4) R package on July 7th, 2018. Data are available for each metric if the minimum required data exists (i.e. two years of record for 7Q2 and ten years for 7Q10). A full year of record was limited to years were at least 250 daily streamflow measurements were recorded. Low flow statistics for most of Wisconsin, excluding the Chippewa River and Fox-Wolf River basins, were estimated using published regression equations from USGS Reports (1977-1981). Each report provides two equations to calculate 7Q2 and 7Q10 for ungauged sites using the single base-flow measurement method. This method consists of predicting the low flow statistics from watershed area (miles-2) and a baseflow index (Bf). Bf is calculated by using an estimate of annual baseflow, usually from a one-time grab sample, divided by the watershed area (USGS Reports define baseflow as the 90% exceedance flow for gaged stations). To calculate low-flow statistics at all stream reaches this layer substituted a single baseflow grab sample measurement with the modeled 90% exceedence flow from the WHD-Plus. The WHD-Plus contains modeled values for many flow and water temperature statistics for nearly all the stream reaches in the WHD. If quality field data on the observed baseflow (i.e. multiple samples over obvious baseflow conditions) are available, a user may input that streamflow value into the Bf to independently calculate 7Q2 or 7Q10 using the following equation, and the look up table: 7Q2 = C2 * DA^A2 * (baseflow/DA)^B2 7Q10 = C10 * DA^A10 * (baseflow/DA)^B10 Where, 7Q2 and 7Q10 low flow metrics (cfs), DA = drainage area (miles-2), baseflow = measured or modeled estimate of 90% exceedance flow (cfs), C2, A2, B2, C10, A10 & B10 = regression coefficients from lookup table depending on major river basin. To create to create low flow metrics for the Chippewa River and Flow-Wolf River basins methods presented in “Low-Flow Characteristics of Streams in the Menominee-Oconto-Peshtigo River Basin, Wisconsin” (USGS Report 80-749) were followed as closely as possible. Empirically derived 7Q2 and 7Q10 values were created for all USGS gauges in each watershed with sufficient data (two years of record for 7Q2 and ten years of record for 7Q10). For gauges with fewer than three times the reoccurrence interval (two or ten years) a Log-Pearson Type III distribution built with the annual seven-day minimum stream flows and appropriate percentiles were calculated to estimate flow statistics for 7Q2 and 7Q10. This method is the standard recommended method for flood frequency analysis and the procedure used by USGS (Riggs 1972, U.S. Water Advisory Committee on Water Data 1982). For any stream gauge with more than three times the reoccurrence interval, the empirically derived low-flow statistic was used to calculate 7Q2 and 7Q10 instead of using the Log-Pearson Type III distribution (approximating methods in “Low-Flow Characteristics of Streams…” USGS Water Resource Investigations). Multiple regression was used to estimate coefficients and intercepts for each low-flow statistic to recreate the equations for the river basins in Wisconsin in missing USG reports. Following the USGS recommendations, these equations are not applicable to any stream with a drainage area of greater than 150 mi-2.

Copyright Text: Ben Kort, Mike Shupryt, WQ Bureau

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

Min Scale: 10000000

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Supports Statistics: true

Has Labels: false

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Use Standardized Queries: true

Supports Datum Transformation: true

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YMin: 200854.7524
XMax: 752468.9101
YMax: 723288.3519
Spatial Reference: 3071  (3071)



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