Rivers Simulated in Twin Cities Metropolitan Area Groundwater-Flow Model V3.0
This page last updated: 03/26/2014
Metadata created using Minnesota Geographic Metadata Guidelines

Go to Section:
1. Overview
2. Data Quality
3. Data Organization
4. Coordinate System
5. Attributes
6. Distribution - Get Data
7. Metadata Reference

Section 1 | Overview
Originator | Barr Engineering Company
Title | Rivers Simulated in Twin Cities Metropolitan Area Groundwater-Flow Model V3.0
Abstract | This dataset contains polylines of rivers simulated in the Twin Cities Metropolitan area groundwater flow model version 3. The dataset does not contain data for riverine lakes or impoundments. These are included in a separate polygon dataset titled 'Riverine Lakes and Impoundments Simulated in the Twin Cities Metropolitan Area Groundwater Flow Model'.
Purpose | This dataset was developed to be used to build a regional groundwater flow model for the Twin Cities Metropolitan Area
Time Period of Content Date | 03/26/2014
Currentness Reference | This data reflects data based on model calibration completed in 2013.
Progress | Complete
Maintenance and Update Frequency | As needed
Spatial Extent of Data | This data covers the extent of the Twin Cities metropolitan area groundwater flow model version 3.
Bounding Coordinates | -94.626 -94.678 45.941 44.096
Place Keywords | Twin Cities, Anoka County, Carver County, Chisago County, Dakota County, Hennepin County, Isanti County, Ramsey County, Scott County, Sherburne County, Washington County, Wright County
Theme Keywords | rivers, streams, surface water features, groundwater
Theme Keyword Thesaurus | None
Access Constraints | None
Use Constraints | None
Contact Person Information | Lanya Ross, Principal Environmental Scientist, Water Supply Planning Metropolitan Council 390 Robert Street North St. Paul, MN 55101-1805 Phone: 651-602-1803 Fax: 651-602-1130 Email: Lanya.Ross@metc.state.mn.us
Browse Graphic | None available
Associated Data Sets |
Section 2 | Data Quality
Attribute Accuracy | There are no known deficiencies.
Logical Consistency | There are no known deficiencies
Completeness | This data reflects data based on model calibration completed in 2013.
Horizontal Positional Accuracy | Horizontal position accuracy is estimated to be +/- 50 meters. Aerial photos from 2010 were used to visually check the stream segment locations. However, errors in the range of 50 meters were often considered acceptable and not adjusted.
Vertical Positional Accuracy | The vertical position accuracy is estimated to be +/- 5 meters. The elevation listed in the attributes 'Stg_start' and 'Stg_end' reflects data from either a 10m digital elevation model and/or digital elevation models derived from LIDAR data. LIDAR data typically are much more accurate. However, the coverage of LIDAR data is incomplete at the time of construction.
Lineage | The river dataset developed for the Twin Cities Metropolitan Groundwater Flow model 2.0 was used as an initial starting point to develop this data set. The stage elevations were checked and adjusted as necessary and new streams were added. Attributes from that dataset that were no longer relevant to this study were removed from the data. Stream centerline locations were originally derived from the Minnesota DNR Public Waters (PWI) watercourses dataset. These streams were then broken down into segments, or reaches, for inclusion into the groundwater flow model. The locations of stream center lines were checked against aerial photos and adjusted in areas that would cause problems for implementing into a groundwater flow model. Elevations for the top and bottom of each reach were determined using a 10m DEM and LIDAR elevation data where available. These elevations are listed in the fields 'Stg_Start' and 'Stg_End'. Segments of rivers and streams that flow through lakes, or are impounded, where clipped from the dataset. A separate dataset of polygons for these segments was developed.
Section 3 | Spatial Data Organization (not used in this metadata)
Section 4 | Coordinate System
Horizontal Coordinate Scheme | Universal Transverse Mercator
UTM Zone Number | 15
Horizontal Datum | NAD83
Horizontal Units | meters
Section 5 | Attributes
Overview | River_Name: Name or River/Stream. Some smaller streams are not named Width: Approx. width of the river along the segment in meters. Values were initially set at those used for the Metro Model 2 and were adjusted as necessary based on estimates from aerial imagery. Shape_Leng: Length of line segment in meters Thick: Bed sediment thickness used to calculate conductance. Values are in meters. For simplicity, all 'Thick' values set to 1m Stg_start: The river or stream stage at the begging of the line segment. All values are in meters. Elevations for the top and bottom of each reach were determined using a 10m DEM and LIDAR elevation data where available Stg_end: The river or stream stage at the end of the line segment. All values are in meters. Elevations for the top and bottom of each reach were determined using a 10m DEM and LIDAR elevation data where available Kz: Vertical hydraulic conductivity of the bed sediments used to estimate conductance for the model. Values in m/day. Bot_Start: The river or stream bottom at the begging of the line segment. All values are in meters and set as Stg_start - 1m. Bot_end: The river or stream bottom at the end of the line segment. All values are in meters and set as Stg_end - 1m. WidthK: Field representing the Width * Kz. This field may be useful for importing into some graphical user interfaces.
Detailed Citation | None
Table Detail: |

Section 6 | Distribution
Publisher |
Publication Date | 03/26/2014
Contact Person Information | Lanya Ross, Principal Environmental Scientist, Water Supply Planning Metropolitan Council 390 Robert Street North St. Paul, MN 55101-1805 Phone: 651-602-1803 Fax: 651-602-1130 Email: Lanya.Ross@metc.state.mn.us
Distributor's Data Set Identifier |
Distribution Liability |
Ordering Instructions |
Online Linkage | None available
Section 7 | Metadata Reference
Metadata Date | 03/26/2014
Contact Person Information | Lanya Ross, Principal Environmental Scientist, Water Supply Planning Metropolitan Council 390 Robert Street North St. Paul, MN 55101-1805 Phone: 651-602-1803 Fax: 651-602-1130 Email: Lanya.Ross@metc.state.mn.us
Metadata Standard Name | Minnesota Geographic Metadata Guidelines
Metadata Standard Version | 1.2
Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm

This page last updated: 03/26/2014
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