| dams | |
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Data format: Coverage File or table name: dams Theme keywords: inlandwaters, structure, inlandWaters, Flood, Flood Control |
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Abstract:
Location and ownership of dams in Napa County. This data was acquired from the April of 2000 version of the National Inventory of Dams website at http://crunch.tec.army.mil/nid/webpages/nid.cfm The locations were then updated in July of 2000 based on topo maps from Neil O'Haire, Napa County. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
Location and ownership of dams in Napa County. This data was acquired from the April of 2000 version of the National Inventory of Dams website at http://crunch.tec.army.mil/nid/webpages/nid.cfm The locations were then updated in July of 2000 based on topo maps from Neil O'Haire, Napa County.
This coverage was created to show the location, name and ownership of dams located within Napa County
With the National Dam Inspection Act (P.L. 92-367) of 1972, Congress authorized the U.S. Army Corps of Engineers (USACE) to inventory dams located in the United States. The Water Resources Development Act of 1986 (P.L 99-662) authorized USACE to maintain and periodically publish an updated National Inventory of Dams (NID).
publication date
Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information. Although every reasonable effort has been made to assure the accuracy of this data, the County of Napa makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The County of Napa assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.
650 Imperial Way, Suite 201
Unknown
Complete
Data downloaded from website of the U.S. Army Corps of Engineers.
Downloaded data acquired from http://crunch.tec.army.mil/nid/webpages/nid.cfm.
Updated locations based on topo maps from Neil O'Haire, Napa County.
Dataset copied.
Dataset copied.
Feature geometry.
ESRI
Internal feature number.
ESRI
perimeter of feature in internal units
ESRI
Internal feature number
software generated
Internal Feature number
user defined
internal feature number
National Inventory of Dams Database
internal feature number
National Inventory of Dams Database
Official State or Agency identification number for the dam.
National Inventory of Dams Database
Official name of the dam. For dams that do not have an official name, the popular name is used.
National Inventory of Dams Database
Reservoir name or names in common use other than the official name of the dam
National Inventory of Dams Database
Any previous reservoir or dam name, if changed.
National Inventory of Dams Database
Official State or Agency identification number for the dam.
National Inventory of Dams Database
The official National Inventory of Dams identification number for the dam.
National Inventory of Dams Database
Dam longitude as a single value, in decimal degrees.
National Inventory of Dams Database
Dam latitude as a single value, in decimal degrees.
National Inventory of Dams Database
Dam location in terms of Section, Township, and Range. Meridian
National Inventory of Dams Database
Name of the county in which the dam is located.
National Inventory of Dams Database
Official name of the river or stream on which the dam is built.
National Inventory of Dams Database
Name of the nearest city, town, or village that is most likely to be
National Inventory of Dams Database
Distance from the dam to the nearest affected city, town, village to
dataset developer
Name of the owner of the dam.
National Inventory of Dams Database
Term indicating owner type. F = Federal, S = State, L = Local Government, U = Public utility, P = Private
National Inventory of Dams Database
Name of principal firm or agency accomplishing design of the dam.
National Inventory of Dams Database
Feature geometry.
ESRI
Indicates whether dam is private dam located on Federal property
National Inventory of Dams Database
Code indicating the type of dam (in order of importance). , RE = Earth, PG = Gravity, VA = Arch, CNVA = Concrete Arch
National Inventory of Dams Database
Year when major modifications were made to the original main dam structure,
National Inventory of Dams Database
Code indicating the material on which the dam is founded, and certainty. R = rock; RS = rock and soil; S = soil; U = unlisted/unknown. Certainty codes are: K = known; Z = estimated.
National Inventory of Dams Database
Codes for indicating the purposes for which the reservoir is used. Codes are concatenated if the dam has multiple purposes. I = Irrigation; H = Hydroelectric; C = Flood Control and Storm Water Management; N = Navigation; S = Water Supply; R = Recreation; P = Fire Protection, Stock, or Small Farm Pond; F = Fish and Wildlife Pond; D = Debris Control; T = Tailings; O = Other.
National Inventory of Dams Database
Year when the original main dam structure was completed.
National Inventory of Dams Database
Year when major modifications were made to the original main dam structure,
National Inventory of Dams Database
Dam length in feet. It is defined as the length along the top of the dam.
National Inventory of Dams Database
Dam height in feet. It is defined as the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed.
National Inventory of Dams Database
Structural height of the dam in feet. It is defined as the vertical distance from the lowest point of the excavated foundation to the top of the dam.
National Inventory of Dams Database
Hydraulic height of the dam in feet. It is defined as the vertical difference between the maximum designed water level and the lowest point in the original streambed.
National Inventory of Dams Database
calculated field based on the maximum value of field items: Dam Height, Hydraulic height, and Structural height, providing a single height value to facilitate database queries.
National Inventory of Dams Database
Number of cubic feet per second which the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.
National Inventory of Dams Database
Maximum storage in acre-feet. It is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.
National Inventory of Dams Database
Normal storage in acre-feet. It is defined as the total storage space in a reservoir below the normal retention level, including dead and inactive storage and excluding any flood control surcharge storage.
National Inventory of Dams Database
A calculated field based on the maximum value of field items: Normal storage, and Maximum storage providing a single storage value to facilitate database queries.
National Inventory of Dams Database
Surface area in acres of the impoundment at its normal retention level.
National Inventory of Dams Database
Drainage area of the dam in square miles. It is defined as the area that drains to a particular point on a river or stream.
National Inventory of Dams Database
Term indicating the potential hazard to the downstream area resulting from failure or mis-operation of the dam or facilities.
National Inventory of Dams Database
Term indicating whether this dam has an Emergency Action Plan (EAP).
National Inventory of Dams Database
Date of the most recent inspection of the dam (MM/DD/YY) prior to the transmittal of the data by the submitting agency.
National Inventory of Dams Database
Scheduled frequency for periodic inspections.
National Inventory of Dams Database
Code indicating whether the dam is state regulated under the National Dam Safety Program.
National Inventory of Dams Database
Name of state agency with regulatory or approval authority over the dam.
National Inventory of Dams Database
Code that describes the type of spillway: C = Controlled;
National Inventory of Dams Database
Width of the spillway in feet, available for discharge when the reservoir is at its maximum designed water surface elevation.
National Inventory of Dams Database
Codes that describe the type of spillway and controlled outlet gates.
National Inventory of Dams Database
Total number of cubic yards occupied by the materials used in the dam structure. Portions of powerhouse, locks, and spillways are included only if they are an integral part of the dam.
National Inventory of Dams Database
Number of existing navigation locks for the project. Maximum of 4.
National Inventory of Dams Database
Length of the primary navigation lock in feet.
National Inventory of Dams Database
Width of the primary navigation lock in feet.
National Inventory of Dams Database
Code identifying which federal agency was involved in funding of the dam.
National Inventory of Dams Database
Code identifying which federal agency was involved in design of the dam.
National Inventory of Dams Database
Code identifying which federal agency was involved in construction of the dam.
National Inventory of Dams Database
Code identifying which federal agency is involved in the regulation of the dam.
National Inventory of Dams Database
Code identifying which federal agency is involved in the inspection of the dam.
National Inventory of Dams Database
Code identifying which federal agency is involved in the operation of the dam.
National Inventory of Dams Database
Code identifying which federal agency partly or wholly owns the dam.
National Inventory of Dams Database
Code identifying which federal agency is involved in other aspects of the dam.
National Inventory of Dams Database
Code identifying the federal or state source agency that has provided the field data on the dam.
National Inventory of Dams Database
The two letter abbreviation for the state in which the dam is located.
National Inventory of Dams Database
X-Coordinate of where the dam is located
dataset developer
Y-coordinate of where the dam is located
Dataset developer
Code identifying if Pat Kowta checked this information
dataset developer
internal feature number
ESRI
internal feature number for polygon
dataset developer
scale of map
dataset developer
650 Imperial Way #201
Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information. Although every reasonable effort has been made to assure the accuracy of this data, the County of Napa makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The County of Napa assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.
All available layers are located in the Data Catalog on the website http://gis.napa.ca.gov/gisdata.asp. You can download the available layers by Registering, then returning to the site to download.
Go to website http://gis.napa.ca.gov/gisdata.asp to request CD by mail for an additional fee.
650 Imperial Way #201