Layers:

Layer: SNEP_HRU_20240924 (0)


Name: SNEP_HRU_20240924

Display Field: NAME_HUC12

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset was developed to facilitate stormwater pollution control and tracking by mapping Hydrologic Response Units (HRUs) at a regional-scale for the SNEP region, which covers the watersheds of Narragansett Bay, Buzzards Bay, Nantucket Sound (including Martha’s Vineyard, Nantucket, and the south-draining portions of Cape Cod. Readily available GIS datasets sourced from MassGIS, RIGIS, NOAA, and USGS were integrated to identify HRU features by land use, impervious cover, hydrologic soil groups, and percent slope of terrain. Each HRU's stormwater pollutant loading was estimated by using EPA's Opti-Tool and historical weather data from the region.

Copyright Text: US EPA, Horsley Witten Group, FB Environmental Associates

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -8014408.37813986
YMin: 5032400.15339692
XMax: -7782359.26594449
YMax: 5225959.3704582
Spatial Reference: 102100 (3857)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field: SWMM_HRU

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID_1, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• State (type: esriFieldTypeString, alias: State, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Town (type: esriFieldTypeString, alias: Town, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• HUC12_TEXT (type: esriFieldTypeString, alias: HUC12_TEXT, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• NAME_HUC12 (type: esriFieldTypeString, alias: NAME_HUC12, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• HRU_HSG (type: esriFieldTypeString, alias: HRU_HSG, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Slope (type: esriFieldTypeString, alias: Slope, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• RI_IC (type: esriFieldTypeString, alias: RI_IC, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• RI_HRU_LU (type: esriFieldTypeString, alias: RI_HRU_LU, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• MA_HRU_LU (type: esriFieldTypeString, alias: MA_HRU_LU, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• Acres (type: esriFieldTypeDouble, alias: Acres, SQL Type: sqlTypeOther, nullable: true, editable: true)
• RI_HRU (type: esriFieldTypeString, alias: RI_HRU, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• MA_HRU (type: esriFieldTypeString, alias: MA_HRU, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• State_HRU (type: esriFieldTypeString, alias: State_HRU, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• SWMM_HRU (type: esriFieldTypeString, alias: SWMM_HRU, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• P_rate (type: esriFieldTypeDouble, alias: P_rate, SQL Type: sqlTypeOther, nullable: true, editable: true)
• P_lbs_yr (type: esriFieldTypeDouble, alias: P_lbs/yr, SQL Type: sqlTypeOther, nullable: true, editable: true)
• N_rate (type: esriFieldTypeDouble, alias: N_rate, SQL Type: sqlTypeOther, nullable: true, editable: true)
• N_lbs_yr (type: esriFieldTypeDouble, alias: N_lbs/yr, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Island (type: esriFieldTypeSmallInteger, alias: Island, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Zn_rate (type: esriFieldTypeDouble, alias: Zn_rate, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Zn_lbs_yr (type: esriFieldTypeDouble, alias: Zn_lbs/yr, SQL Type: sqlTypeOther, nullable: true, editable: true)
• TSS_rate (type: esriFieldTypeDouble, alias: TSS_rate, SQL Type: sqlTypeOther, nullable: true, editable: true)
• TSS_lbs_yr (type: esriFieldTypeDouble, alias: TSS_lbs/yr, SQL Type: sqlTypeOther, nullable: true, editable: true)
• EPA_HRU_code (type: esriFieldTypeDouble, alias: EPA_HRU_code, SQL Type: sqlTypeOther, nullable: true, editable: true)
• EPA_HRU_desc (type: esriFieldTypeString, alias: EPA_HRU_desc, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

ID: Commercial_I
Name: Commercial Impervious
Domains:

Templates:

Name: Commercial_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Commercial_I

---

ID: HigDensityRes_I
Name: High Density Residential
Domains:

Templates:

Name: HigDensityRes_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: HigDensityRes_I

---

ID: MedDensityRes_I
Name: Medium Density Residential
Domains:

Templates:

Name: MedDensityRes_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: MedDensityRes_I

---

ID: LowDensityRes_I
Name: Low Density Residential
Domains:

Templates:

Name: LowDensityRes_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: LowDensityRes_I

---

ID: OpenSpace_I
Name: Open Space Impervious
Domains:

Templates:

Name: OpenSpace_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: OpenSpace_I

---

ID: Water
Name: Water
Domains:

Templates:

Name: Water
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Water

---

ID: Pervious_A
Name: Pervious A
Domains:

Templates:

Name: Pervious_A
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Pervious_A

---

ID: Pervious_B
Name: Pervious B
Domains:

Templates:

Name: Pervious_B
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Pervious_B

---

ID: Pervious_C
Name: Pervious C
Domains:

Templates:

Name: Pervious_C
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Pervious_C

---

ID: Pervious_D
Name: Pervious D
Domains:

Templates:

Name: Pervious_D
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Pervious_D

---

ID: Forest_B
Name: Forest
Domains:

Templates:

Name: Forest_B
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Forest_B

---

ID: Agriculture_B
Name: Agriculture
Domains:

Templates:

Name: Agriculture_B
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Agriculture_B

---

ID: Agriculture_I
Name: Agriculture Impervious
Domains:

Templates:

Name: Agriculture_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Agriculture_I

---

ID: Forest_I
Name: Forest Impervious
Domains:

Templates:

Name: Forest_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Forest_I

---

ID: Highway_I
Name: Highway
Domains:

Templates:

Name: Highway_I
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: Highway_I

---

ID: NULL
Name: NULL
Domains:

Templates:

Name: NULL
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SWMM_HRU: NULL

---


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/22/2025 2:19:42 PM

Schema Last Edit Date: 1/22/2025 2:19:42 PM

Data Last Edit Date: 1/22/2025 2:19:42 PM