# NHDFcode

DESCRIPTIO:
Reservoir: Reservoir Type = Disposal; Construction Material = Earthen


DESCRIPTIO:
Reservoir: Reservoir Type = Disposal; Construction Material = Nonearthen


DESCRIPTIO:
Canal/Ditch: Canal/Ditch Type = Aqueduct


DESCRIPTIO:
Dam/Weir: Construction Material = Earthen


DESCRIPTIO:
Dam/Weir: Construction Material = Nonearthen


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Intermittent


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Perennial


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Intermittent; Stage = High Water Elevation


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Intermittent; Stage = Date of Photography


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Perennial; Stage = Average Water Elevation


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Perennial; Stage = Normal Pool


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Perennial; Stage = Date of Photography


DESCRIPTIO:
Lake/Pond: Hydrographic Category = Perennial; Stage = Spillway Elevation


DESCRIPTIO:
Inundation Area: Inundation Control Status = Not Controlled


DESCRIPTIO:
Inundation Area: Inundation Control Status = Controlled


DESCRIPTIO:
Inundation Area: Inundation Control Status = Controlled; Stage = Flood Elevation


DESCRIPTIO:
Pipeline: Pipeline Type = Aqueduct; Relationship to Surface = At or Near


DESCRIPTIO:
Pipeline: Pipeline Type = Aqueduct; Relationship to Surface = Elevated


DESCRIPTIO:
Pipeline: Pipeline Type = Aqueduct; Relationship to Surface = Underground


DESCRIPTIO:
Pipeline: Pipeline Type = Aqueduct; Relationship to Surface = Underwater


DESCRIPTIO:
Pipeline: Pipeline Type = General Case; Relationship to Surface = At or Near


DESCRIPTIO:
Pipeline: Pipeline Type = General Case; Relationship to Surface = Elevated


DESCRIPTIO:
Pipeline: Pipeline Type = General Case; Relationship to Surface = Underground


DESCRIPTIO:
Pipeline: Pipeline Type = General Case; Relationship to Surface = Underwater


DESCRIPTIO:
Pipeline: Pipeline Type = Penstock; Relationship to Surface = At or Near


DESCRIPTIO:
Pipeline: Pipeline Type = Penstock; Relationship to Surface = Elevated


DESCRIPTIO:
Pipeline: Pipeline Type = Penstock; Relationship to Surface = Underground


DESCRIPTIO:
Pipeline: Pipeline Type = Penstock; Relationship to Surface = Underwater


DESCRIPTIO:
Reservoir: Reservoir Type = Decorative Pool


DESCRIPTIO:
Reservoir: Reservoir Type = Tailings Pond; Construction Material = Earthen


DESCRIPTIO:
Reservoir: Reservoir Type = Tailings Pond


DESCRIPTIO:
Reservoir: Reservoir Type = Swimming Pool


DESCRIPTIO:
Reservoir: Reservoir Type = Cooling Pond


DESCRIPTIO:
Reservoir: Reservoir Type = Filtration Pond


DESCRIPTIO:
Reservoir: Reservoir Type = Settling Pond


DESCRIPTIO:
Reservoir: Reservoir Type = Sewage Treatment Pond


DESCRIPTIO:
Reservoir: Reservoir Type = Water Storage; Construction Material = Nonearthen


DESCRIPTIO:
Reservoir: Reservoir Type = Water Storage; Construction Material = Earthen; Hydrographic Category = Intermittent


DESCRIPTIO:
Reservoir: Reservoir Type = Water Storage; Construction Material = Earthen; Hydrographic Category = Perennial


DESCRIPTIO:
Reservoir: Reservoir Type = Water Storage


DESCRIPTIO:
Reservoir: Construction Material = Earthen


DESCRIPTIO:
Reservoir: Construction Material = Nonearthen


DESCRIPTIO:
Reservoir: Reservoir Type = Water Storage; Hydrographic Category = Perennial


DESCRIPTIO:
Reservoir: Reservoir Type = Evaporator; Construction Material = Earthen


DESCRIPTIO:
Rock: Relationship to Surface = Abovewater


DESCRIPTIO:
Rock: Relationship to Surface = Underwater


DESCRIPTIO:
Special Use Zone: Special Use Zone Type = Dump Site; Operational Status = Operational


DESCRIPTIO:
Special Use Zone: Special Use Zone Type = Dump Site; Operational Status = Abandoned


DESCRIPTIO:
Special Use Zone: Special Use Zone Type = Spoil Area; Operational Status = Operational


DESCRIPTIO:
Special Use Zone: Special Use Zone Type = Spoil Area; Operational Status = Abandoned


DESCRIPTIO:
Stream/River: Hydrographic Category = Intermittent


DESCRIPTIO:
Stream/River: Hydrographic Category = Perennial


DESCRIPTIO:
Sounding Datum Line: Positional Accuracy = Approximate


DESCRIPTIO:
Sounding Datum Line: Positional Accuracy = Definite


DESCRIPTIO:
Special Use Zone Limit: Positional Accuracy = Definite


DESCRIPTIO:
Special Use Zone Limit: Positional Accuracy = Indefinite


# NHDMetadata

PROCESSDES:
This process converted Digital Line Graph (DLG-3) data to the features and converted the coordinate system to geographic (longitude-latitude) coordinates in the North American Datum of 1983, in five steps:1. The U.S. Geological Surveys Batch DLG-3 to DLG


PROCESSDES:
Flow validation performed after initial release of data: 1. Convert RF3 to RF3 double prime. This batch operation processed Reach File version 3 to delete duplicate reaches, reassign reaches to the correct cataloging unit, validate geographic names assig


PROCESSDES:
Updated stream level attributes based on flow relationships produced by the flow validation process. Stream level updates were based upon names for named reaches and the arbolate sum for unnamed reaches. Arbolate sum for any reach on the network is the s


PROCESSDES:
Modified Flow Relationships using NHD ArcView Tools: Performed flow qaqc and repaired flow relationships, as needed.


PROCESSDES:
20060111,LDM,Modified Names using NHD ArcView Tools:  Added names to NHD reaches and waterbodies by comparing them to the GNIS coordinates. 20050210,AAJ,Modified Flow Relationships using NHDGeo ArcView Tools:  Performed flow qaqc and repaired flow relati


PROCESSDES:
Replaced branched and disjoint (disconnected) reaches with linear reaches in NHDFlowline.  This change occurred during the conversion to the geodatabase model.  Each NHDFlowline that was part of a branched or disjoint reach was assigned to a new reach.


PROCESSDES:
Initial Release built in 9 steps, excluding flow QA/QC: 1. Convert RF3 to RF3 double prime. This batch operation processed Reach File version 3 to delete duplicate reaches, reassign reaches to the correct cataloging unit, validate geographic names assign


PROCESSDES:
Added flow relationships between this subbasin and 12090401.

ADDRESS:
U.S. Geological Survey Rocky Mountain Mapping Center P.O. Box 25046


PROCESSDES:
Added flow relationships between this subbasin and 12040201. The metadata for 12040201 will not indicate this update although the data has been updated.


# NHDSourceCitation

SOURCECONT:
Spatial elements and attributes for all basic features.


SOURCECONT:
reach codes, network flow direction, stream names

SOURCECURR:
date range for completion of RF3 cataloging units


TITLE:
Geographic Names Information System Oracle Database

SOURCECONT:
names for reaches and areal water bodies


SOURCECONT:
artificial paths through 2-dimensional streams and other water bodies


ORIGINATOR:
The states of CT, DE, FL, KY, MN, NC, OK, SC, WV, WA, OR, ID, MT


# NHDWaterbody

GNIS_NAME:
Soil Conservation Service Site 16 Reservoir


GNIS_NAME:
Soil Conservation Service Site 10 Reservoir


GNIS_NAME:
Soil Conservation Service Site 12 Reservoir


GNIS_NAME:
Soil Conservation Service Site 1 Reservoir


GNIS_NAME:
Soil Conservation Service Site 6 Reservoir


GNIS_NAME:
Soil Conservation Service Site 5 Reservoir


GNIS_NAME:
Soil Conservation Service Site 17 Reservoir


GNIS_NAME:
Soil Conservation Service Site 2 Reservoir


GNIS_NAME:
Soil Conservation Service Site 3 Reservoir


GNIS_NAME:
Soil Conservation Service Site 4 Reservoir


GNIS_NAME:
Soil Conservation Service Site 7 Reservoir


GNIS_NAME:
Soil Conservation Service Site 14 Reservoir


GNIS_NAME:
Soil Conservation Service Site 24 Reservoir


GNIS_NAME:
Soil Conservation Service Site 26 Reservoir


GNIS_NAME:
Soil Conservation Service Site 34 Reservoir


GNIS_NAME:
Soil Conservation Service Site 23 Reservoir


GNIS_NAME:
Soil Conservation Service Site 29 Reservoir


GNIS_NAME:
Soil Conservation Service Site 27 Reservoir


GNIS_NAME:
Soil Conservation Service Site 13 Reservoir


GNIS_NAME:
Soil Conservation Service Site 31 Reservoir


GNIS_NAME:
Soil Conservation Service Site 15 Reservoir


GNIS_NAME:
Soil Conservation Service Site 37 Reservoir


GNIS_NAME:
Soil Conservation Service Site 8 Reservoir


GNIS_NAME:
Soil Conservation Service Site 9 Reservoir


GNIS_NAME:
Soil Conservation Service Site 11 Reservoir


GNIS_NAME:
Soil Conservation Service Site 38 Reservoir


