RECORD LAYOUT FOR DAMS
Field
Type
NIDID
text
Desc
Nat'l Inventory of Dams ID; for saddle dams or dikes, the NIDID is the same as
the main dam.
Dam_Name
text
Dam name
Insp_date
date
Inspection date (converted)
Submit_date
date
submit_date converted by NICAR
River
text
Name of the river or stream on which the dam was built; if on a tributary, use
"TR" and name of main river or stream; if offstream, use OS or OFFSTREAM.
City_02
text
The nearest city, taken from the 2002 data
County
text
The county in which the dam is located
State
text
The state in which the dam is located
Cong_Dist
text
The Congressional District in which the dam is located
Cong_Rep
text
The Congressional Representative of that District
Party
text
Political party of the Congressional Rep.
Owner_Type
text
Type of owner. F = Federal, S = State, L = Local, U = Public Utility, P =
Private, X = Not Listed
Owner_Name text
Name of the dam owner (if multiple, separated by semicolons)
Year_Comp
number Year in which the original main structure was completed
Year_Mod
text
Year when major modifications or rehabilitation were completed, includes
codes for different types of work (see code sheet)
Continued on next page…
Private_Dam
text
Y/N - is the dam privately owned
NPDP_Hazard text
Potential hazard to the downstream area resulting from dam failure or
misoperation. Taken from Stanford’s “National Performance of Dams
Program”.
Permit_Auth
text
Y/N - does the state regulatory organization have the authority to review and
approve plans to construct, modify or abandon dams
Insp_Auth
text
Y/N - does the state regulatory organization have the authority to require or
perform the inspection
Enfrc_Auth
text
Y/N - does the state regulatory organization have the authority to issue notices
to require dam owners to perform necessary maintenance or remedial work,
revise operating procedures or take other actions
Juris_Dam
text
Y/N - does the dam meet the state regulatory organization's definition of a
jurisdictional dam (see code sheet for definitions)
NID_Height
number Accepted as general height of the dam (maximum of dam height, structural
height and hydraulic height)
NID_Storage
number Accepted as general storage of the dam
Dam_Length
number In feet, the length along the top of the dam
Max_Discharge number Number of cubic feet per second that the spillway is capable of discharging
Drain_Area
number In square miles, the area that drains to a particular point (in this case, the dam)
on a river or stream
Dam_Designer text
Name of principal firm(s) or agency who designed the dam
(if multiple, separated by semicolon)
EAP
text
Does the dam have an Emergency Action Plan, a plan to reduce the potential
for property damage and loss of life in case of dam failure or large flood.
Insp_Freq
number In years, the scheduled frequency interval for periodic inspections
St_Reg_Dam
text
Y/N - does the state regulate the dam
St_Reg_Agncy text
The initials of the regulating state agency
Volume
number Total cubic yards occupied by materials used in the dam structure
Fed_Fund
Fed_Design
Fed_Con
Fed_Reg
Fed_Insp
Srce_Agncy
Oth_StrucID
Num_Struc
Longitude
Latitude
text
Code for the federal agency involved in the funding of the dam
(if multiple, separated by semicolon)
text
Code for the federal agency involved in the design of the dam
(if multiple, separated by semicolon)
text
Code for the federal agency involved in the construction of the dam
(if multiple, separated by semicolon)
text
Code for the federal agency involved in the regulation of the dam
(if multiple, separated by semicolon)
text
Code for the federal agency involved in the inspection of the dam
(if multiple, separated by semicolon)
text
Primary federal or state agency responsible for data
text
ID for saddle dam or dike associated with larger dam project
number Number of separate structures associated with this dam project
text
Longitude at dam centerline, in decimal degrees
text
Latitude at dam centerline, in decimal degrees