20250917
09445100
1.0
FALSE
ELEV_Contour
002
Projected
GCS_NAD_1983_HARN_Adj_MN_Ramsey
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_Adj_MN_Ramsey_Feet
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20250917
09450000
20250917
09450000
Matt Koukol
Ramsey County
GIS Manager
651.266.3463
121 7th Place E
Suite 2300
Saint Paul
MN
55101
RCGISMetaData@co.ramsey.mn.us
20160401
ArcGIS Metadata
1.0
Matt Koukol
Ramsey County
GIS Manager
651.266.3463
121 7th Place E
Suite 2300
Saint Paul
MN
55101
RCGISMetaData@co.ramsey.mn.us
This dataset is distributed on the internet by clicking below after Online Linkage.
Geodatabase, Shapefile, DWG & DXF
ArcGIS 9.x
https://www.ramseycounty.us/your-government/open-government/research-data
Enterprise Geodatabase Feature Class
Contours, Ramsey County, Minnesota (ELEV_Contour)
Ramsey County
Ramsey County
vector digital data
Ramsey County contour data set is a linear dataset created from Light Detection and Ranging (LiDAR) elevation data for the Twin Cities metropolitan region in east-central Minnesota in Spring and Fall 2011, with some reflights in Spring 2012. For more information, see http://www.mngeo.state.mn.us/chouse/metadata/lidar_metro2011.html
The Minnesota Elevation Mapping Project was initiated to support the development of high accuracy land surface information for the purposes of improving water quality, flood emergency preparedness and response, floodplain mapping, transportation planning and design, recreational planning and design, urban planning and to provide more efficient and effective project planning and execution. This project was primarily funded by the Clean Water Fund of the Clean Water, Land and Legacy Amendment.
Matt Koukol
Ramsey County
GIS Manager
651.266.3463
121 7th Place E
Suite 2300
Saint Paul
MN
55101
RCGISMetaData@co.ramsey.mn.us
withheld
Minnesota, MN, Ramsey County
elevation, LiDAR, DEM, digital elevation model, contour, topographic, topo, DTM, LAS, breakline
ISO Topic Category 19115
elevation, LiDAR, DEM, digital elevation model, contour, topographic, topo, DTM, LAS, breakline
Minnesota, MN, Ramsey County
None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgment of the publisher would be appreciated.
EXCEPT AS EXPRESSLY STATED HEREIN, THIS DATA IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. USER BEARS ANY AND ALL RISK RELATING TO QUALITY AND PERFORMANCE OF THIS DATA. Limit on Liability: This data is not a legally recorded map or survey and is not intended to be used as one. This data is a compilation of records and information from various state, county, and city offices, and other sources, and should be used for reference only.
In no event will the County of Ramsey be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of, or inability to use, the data, even if advised of the possibility of such damages. Specifically, the County of Ramsey is not responsible for any costs including, but not limited to, those incurred as a result of lost profits or revenue, loss of use of data, the costs of recovering such programs or data, the cost of any substitute programs or data, claims by third parties, or for other similar costs.
None.
ESRI ArcCatalog 9.1.0.722
true
-93.228202
-92.982974
45.124277
44.890922
Spring and Fall 2011 and Spring 2012
2011
Ramsey County
GPS phase data was post processed with continuous kinematic survey techniques using "On the Fly" (OTF) integer ambiguity resolution. The GPS data was processed with forward and reverse processing algorithms. The results from each process, using the data collected at the airport and in project area, were combined to yield a single fixed integer phase differential solution of the aircraft trajectory. The differences between the forward to reverse solution within the project area were within project specifications, indicating a valid and accurate solution. An IMU was used to record precise changes in position and orientation of the LIDAR scanner at a rate of 200 Hz. All IMU data was processed post flight with a filter to integrate inertial measurements and precise phase differential GPS positions. The resulting solution contains geodetic position, omega, phi, kappa, and time for subsequent merging with the laser ranging information.
All deliverables were quality checked by MN DNR and passed inspection.
Entire Ramsey County coverage
Meets or exceeds horizontal accuracy of 0.6m RMSE. The NAD83 (HARN) datum was used.
The NAVD88 (Geoid09) vertical datum was used. REPORT FROM THE VENDOR: Vertical accuracy of the LiDAR data will be assessed and reported in accordance with the guidelines developed by the NDEP (National Digital Elevation Program) and subsequently adopted by the ASPRS (American Society for Photogrammetry and Remote Sensing). The complete guidelines may be found in Section 1.5 of the www.ndep.gov/NDEP_Elevation_Guidelines_Ver1_10May2004.pdf Vertical accuracy requirements using the NDEP/ASPRS: 1. 1.5 points/square meter areas: Sub-Project A 24.5cm ACCz, 95% (12.5cm RMSEz) 2. The higher density areas (Dakota Block, Metro Block and Maple Grove Block): 17.64cm ACCz 95% (9.0cm RMSEz) REPORTS FROM MINNESOTA DNR: True accuracy values: Metro Block - 5 cm Dakota Block - 10.8 cm Maple Grove Block - 8.3 cm See the complete Vertical Validation Reports in each folder on the data download FTP site; for example, the report for the Maple Grove Block is here: ftp.lmic.state.mn.us/pub/data/elevation/lidar/projects/metro/block_maple_grove/maple_grove_vertical_validation_report.pdf
PROCEDURE: LIDAR data set acquired in 2003; converted to TIN and interpolated to 2' contours.
MAP SOURCE: LIDAR Points
PROJECTION: Ramsey County Coordinate System
Metadata imported.
withheld
Metadata imported.
withheld
Metadata imported.
withheld
Metadata imported.
withheld
2400
0
http://www.gis.state.mn.us/stds/metadata.htm
ESRI Metadata Profile
ELEV_Contour
Feature Class
0
Elevation
Value of elevation at contour
Elevation
Double
8
38
8
Contour_Type
Type of contour
Intermediate
Intermediate
Index
Index (10 ft contours)
Contour_Type
String
255
0
0
ALLEYLI
10
DXF_LAYER
10
ALLEYLIC
20
DXF_LAYER
10
CORW
30
DXF_LAYER
10
CORWC
40
DXF_LAYER
10
COSARW
50
DXF_LAYER
10
COSARWC
60
DXF_LAYER
10
EASEMENT
70
DXF_LAYER
10
EASEMENTC
80
DXF_LAYER
10
FEDRW
90
DXF_LAYER
10
LAKELI
110
DXF_LAYER
10
MUNCSARWC
120
DXF_LAYER
10
MUNRW
130
DXF_LAYER
10
FEDRWC
100
DXF_LAYER
10
MUNRWC
140
DXF_LAYER
10
MUNSARW
150
DXF_LAYER
10
MUNSARWC
160
DXF_LAYER
10
OLDSIDELOT
170
DXF_LAYER
10
RIVERLI
180
DXF_LAYER
10
RRRW
190
DXF_LAYER
10
RRRWC
200
DXF_LAYER
10
SIDELOT
210
DXF_LAYER
10
SIDELOTB
220
DXF_LAYER
10
SIDELOTBC
230
DXF_LAYER
10
SIDELOTC
240
DXF_LAYER
10
STRW
250
DXF_LAYER
10
STRWC
260
DXF_LAYER
10
TAXLOT
270
DXF_LAYER
10
TAXLOTC
280
DXF_LAYER
10
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
VACALLEYLI
290
DXF_LAYER
10
WATERID
300
DXF_LAYER
10
GlobalID
GlobalID
GlobalID
38
0
0
created_user
created_user
String
255
0
0
created_date
created_date
Date
8
0
0
last_edited_user
last_edited_user
String
255
0
0
last_edited_date
last_edited_date
Date
8
0
0
Shape
Shape
Geometry
8
0
0
Feature geometry.
Esri
Coordinates defining the features.
Shape.STLength()
Shape.STLength()
Double
0
0
0
Attributes are related to the creation and digital conversion of parcel lines.
dataset
Esri
9.0.0
Simple
FALSE
0
TRUE
FALSE