REC riverlines v2.5 (River Environment Classification)

NIWA REC 2v5 (River Environment Classification)

The REC has been used to classify all the rivers of New Zealand at a 1:50,000 mapping scale. The area classified comprises 267,000 km2 and 426,000 km of river network. This datasets is for the River Lines.

Attributes associated directly with network:

Field - Type - Description:

Catarea Real Watershed area in m2

CUM_Area Real Area upstream of a reach (and including this reach area) in m2.

Nzsegment Integer Reach identifier to be used with REC2 (supersedes nzreach in REC1).

nz_fnode Integer Unique number of preceding river segment's outlet node.

nz_tnode Integer Unique number of following river segment's inlet node.

Lengthdown RealThe distance to coast from any reach to its outlet reach, where the river drains (m).

Headwater Integer Number (0) denoting whether a stream is a “source” (headwater) stream. Non-zero for non-headwater streams.

Hydseq Integer A unique number denoting the hydrological processing order of a river segment relative to others in the newtork.

StreamOrder Integer A number describing the Strahler order a reach in a network of reaches.

euclid_dist Real The straight line distance of a reach from the reach “inlet” to its “outlet”.

upElev Real Height (asl) of the upstream end of a reach section in a watershed (m).

downElev Real Height (asl) of the downstream end of a reach section in a watershed (m).

upcoordX Real Easting of the upstream end of a river segment in m (NZTM2000).

upcoordY Real Northing of the upstream end of a river segment in m (NZTM2000).

downcoordX Real Easting of the downstream end of a river segment in m (NZTM2000).

downcoordY Real Northing of the downstream end of a river segment in m (NZTM2000).

sinuosityReal Actual distance divided by the straight line distance giving the degree of curvature of the stream

nzreach_rec1 IntegerThe REC1 identifiying number for the corresponding\closest reach from REC1 (can be used to retrieve the REC management classes)

headw_dist Integer Distance of the furthermost “source” or headwater reach from any reach (m).

Shape_length RealThe length of the reach (vector) as calculated by ArcGIS.

Segslpmax Real Maximum segment slope along length of reach.

Segslpmean Real Mean segment slope along length of reach. LID Integer Lake Identifier number(LID) of overlapping lake.

Reachtype Integer A value of 2 is assigned if the segment is an outlet to the lake, otherwise 0 or null.

nextdownid integer segment number of the most downstream reach

 
Citation proposal
. REC riverlines v2.5 (River Environment Classification). https://dc.niwa.co.nz:/niwa_dc/srv/api/records/0abeee37-9805-459a-8c9f-b0f488775aa0
 

INSPIRE

Identification

File identifier
0abeee37-9805-459a-8c9f-b0f488775aa0   XML
Hierarchy level
Dataset
Online resource
Protocol
WWW:LINK-1.0-http--link
Resource identifier
Metadata language
English
Spatial representation type
Vector
Encoding
Format
SDE Feature Class
Format
Esri Web Service
Version
Geoservice
Projection
code
2193
 

Classification of data and services

Topic category
  • Inland waters
  • Geoscientific information
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Keywords

Keywords
  • Downloadable Data
Other keywords
Keywords ( Theme )
  • River
  • Model
 
 

Geographic coverage

N
S
E
W


 

Temporal reference

Temporal extent
Temporal extent
Date
 

Quality and validity

 

Conformity

Conformity
Conformity
 

Conformity

Conformity
Conformity
 

Restrictions on access and use

 

Restrictions on access and use

 

Responsible organization (s)

Contact for the resource
Organisation name
NIWA
Email
[email protected]
 

Responsible organization (s)

Contact for the resource
Organisation name
NIWA
Email
[email protected]
 

Metadata information

Contact for the metadata
Organisation name
Tilmann
Email
[email protected]
Organisation name
NIWA
Email
[email protected]
Organisation name
Email
Organisation name
NIWA
Email
[email protected]
Organisation name
NIWA
Email
[email protected]
Date stamp
2022-11-14T17:29:05
Metadata language
English
Character set
UTF8
 
 

SDS

Conformance class 1: invocable

Access Point URL
Endpoint URL
Technical specification
 

Conformance class 2: interoperable

Coordinate reference system
 
Quality of Service
 
Access constraints
Limitation
 
Use constraints
Limitation
 
Responsible custodian
Contact for the resource
 
 

Conformance class 3: harmonized

 
 

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