| Field | Value |
|---|---|
Title |
Degree of River Regulation (Spatial Dataset) |
Abstract |
This data summarises the results of a spatial analysis to identify significant tributary junctions in rivers, across the NSW Murray-Darling Basin, where inflows from unregulated or less regulated tributaries join heavily regulated rivers. Tributary junctions were characterized in terms of the relative change in the ‘Degree of Regulation’ (DoR) at individual tributary junctions. DoR was calculated as the ratio of the storage capacity of all upstream reservoirs relative to the mean annual runoff. Furthermore, This spatial analysis identifies potential tributary hotspots across the NSW Murray-Darling Basin (MBD). Rivers often experience major discontinuities in ecological function due to dams, whereby the timing and volume of flow and water chemistry can be significantly altered from upstream to downstream of the dam, impacting ecosystem productivity and aquatic food webs. Tributary inflows from such unregulated catchments can play an important role in mitigating changes in water chemistry below large dams, thereby overcoming the so-called serial discontinuity effect, which describes the impacts of large dams on longitudinal gradients in water chemistry. Because tributary inflows can be rich in nutrients and dissolved carbon, they can lead to ‘priming’ effects, in which biogeochemical processes and ecosystem productivity are enhanced below confluences with more heavily regulated rivers. Yet, there have been few attempts to identify potential priority tributaries that may play a larger role in driving biochemistry and ecosystem function below dams. This spatial analysis identifies significant tributary junctions in rivers, across the NSW Murray-Darling Basin, where inflows from unregulated or less regulated tributaries join heavily regulated rivers. Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join. |
Resource locator |
|
Data Quality Statement |
Name: Data Quality Statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: Data quality statement for Degree of Regulation (Spatial Dataset) Function: download |
Degree_of_River_Regulation (MapService) (nsw.gov.au) |
Name: Degree_of_River_Regulation (MapService) (nsw.gov.au) Protocol: WWW:DOWNLOAD-1.0-http--download Description: ESRI Rest Map Service of Degree_of_River_Regulation Function: download |
Degree_of_River_Regulation (FeatureService) (nsw.gov.au) |
Name: Degree_of_River_Regulation (FeatureService) (nsw.gov.au) Protocol: WWW:DOWNLOAD-1.0-http--download Description: ESRI Rest Feature Service of Degree_of_River_Regulation Function: download |
Degree_of_River_Regulation (WMS) (nsw.gov.au) |
Name: Degree_of_River_Regulation (WMS) (nsw.gov.au) Protocol: WWW:DOWNLOAD-1.0-http--download Description: WMS of Degree_of_River_Regulation Function: download |
Degree_of_River_Regulation (WFS) (nsw.gov.au) |
Name: Degree_of_River_Regulation (WFS) (nsw.gov.au) Protocol: WWW:DOWNLOAD-1.0-http--download Description: WFS of Degree_of_River_Regulation Function: download |
A-spatial-analysis-of-tributary-effects-below-large-storages-in-the-NSW-Murray-Darling-Basin.pdf |
Name: A-spatial-analysis-of-tributary-effects-below-large-storages-in-the-NSW-Murray-Darling-Basin.pdf Protocol: WWW:DOWNLOAD-1.0-http--download Description: A spatial analysis of tributary effects below large storages in the NSW Murray-Darling Basin. A report on the methods and results from this spatial analysis. Function: download |
Metadata Statement_Degree of River Regulation |
Name: Metadata Statement_Degree of River Regulation Protocol: WWW:DOWNLOAD-1.0-http--download Description: Associate Metadata relevant to Degree of River Regulation Function: download |
Unique resource identifier |
|
Code |
7bbed45a-6be2-4519-9afc-4a5dc3c37ab8 |
Presentation form |
Map digital |
Edition |
1 |
Dataset language |
English |
Metadata standard |
|
Name |
ISO 19115 |
Edition |
2016 |
Dataset URI |
https://datasets.seed.nsw.gov.au/dataset/7bbed45a-6be2-4519-9afc-4a5dc3c37ab8 |
Purpose |
This spatial analysis identifies potential tributary hotspots across the NSW Murray-Darling Basin (MBD). |
Status |
Completed |
Spatial representation |
|
Type |
vector |
Spatial reference system |
|
Code identifying the spatial reference system |
4283 |
Spatial resolution |
1 cm |
| Field | Value |
|---|---|
Topic category |
| Field | Value |
|---|---|
Keyword set |
|
keyword value |
WATER WATER-Surface |
Originating controlled vocabulary |
|
Title |
ANZLIC Search Words |
Reference date |
2008-05-16 |
Geographic location |
|
West bounding longitude |
139 |
East bounding longitude |
153 |
North bounding latitude |
-39 |
South bounding latitude |
-24.5 |
NSW Place Name |
NSW Murray Darling Basin |
Vertical extent information |
|
Minimum value |
-100 |
Maximum value |
2228 |
Coordinate reference system |
|
Authority code |
urn:ogc:def:cs:EPSG:: |
Code identifying the coordinate reference system |
5711 |
Temporal extent |
|
Begin position |
2010-01-01 |
End position |
N/A |
Dataset reference date |
|
Resource maintenance |
|
Maintenance and update frequency |
As needed |
Contact info | |
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| Field | Value |
|---|---|
Lineage |
The Australian Hydrologic geofabric and associated catchments and river segments were used to map DoR for the entire MDB (a total of 167,363 distinct stream segments). Estimates of mean annual runoff were derived from the Australian Landscape Water Balance Model (AWRA-L v5) and cumulative upstream storage was calculated based on the volumes associated with the ANCOLD Register of large dams (ANCOLD, 2010). Differences in DoR between individual river reaches (dDoR) were mapped. |
| Field | Value |
|---|---|
Limitations on public access |
|
| Field | Value |
|---|---|
Responsible party |
|
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
| Field | Value |
|---|---|
Metadata point of contact |
|
Contact position |
Data Broker |
Organisation name |
NSW Department of Climate Change, Energy, the Environment and Water |
Telephone number |
131555 |
Email address |
|
Web address |
https://www.nsw.gov.au/departments-and-agencies/dcceew |
Responsible party role |
pointOfContact |
Metadata date |
2024-08-08T21:26:40.302546 |
Metadata language |
|