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Layer: HistoricStreams (ID:0)

View In:   Map Viewer

Name: HistoricStreams

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: IntroductionThis layer is constructed from derived data. Multiple historic maps were used to identify and classify the historic hydrology for the St. Louis, MO region. The process for constructing the historic hydrology is iterative and remains a work in progress. Initial construction began in March of 2012 and updates are applied on an "as needed" basis.MethodologyThe scanned and georeferenced historic maps were used as a base map and guide for identifying the historic hydrology. Line features were drawn along stream segments visible on the maps. Where present on the historic map, persistence for the stream segment was identified and recorded in the feature attributes using the standard categories: permanent, intermittent, and ephemeral.Once the stream segments were traced, a stream order was assigned to the perennial streams. To do so, the headwater of a stream was located and assigned a value of one. Then at a confluence, the order was increase only when both constituent streams were at the same level. For example, the downstream stream segment would have an order of two if both constituent streams had an order of one. This downstream segment would then only increase to a third order stream if subsequently merging stream also had an order of two (i.e. was a second order stream). Conversely, if a first order stream joined a second order stream, the resultant stream would still be second order. (See http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000z3000000.htmfor a description of the Strahler stream order method applied.)Buffers were used as a surrogate for riparian corridor. The size of the buffer was calculated as a function of the stream order. Since only perennial streams were assigned an order, only perennial streams were buffered. The rule for determining the buffer width was:First order streams buffered to 25 feetSecond and larger streams buffered to 50 feetSources“City of St. Louis, Missouri and City of Chicago, Illinois” published by J. H. Colton and Co., 1855.“City of St. Louis” published by Julius Hutawa, 1860.“Gould's Official Map of [the] City of St. Louis” published by Gould Directory Co., 1880.“Barney's Indexed Map of St. Louis” published by Higgins & Co., 1902.“Hammond's 8 x 11 Map of St. Louis” published by C.S. Hammond & Co., 1903.“St. Louis Quadrangle, Missouri – Illinois” published by U.S. Geological Survey, 1903.“City of St. Louis” published by U.S. Geological Survey, 1904.“Soil Map” published by U.S. Department of Agriculture - Bureau of Soils, 1919.

Copyright Text: East-West Gateway Council of Governments

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Global ID Field:

Type ID Field:

Fields:
Templates:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 5/21/2025 6:57:40 PM

Schema Last Edit Date: 5/21/2025 6:57:40 PM

Data Last Edit Date: 5/21/2025 6:57:40 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat