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03.05.2021, admin
Maps | Bay of Plenty Regional Council | Toi Moana

NIWA has calculated estimates of environmental conditions across the entire New Zealand river network, including hydrology, ecology and water quality metrics.

This interactive webtool allows you to map and boating maps nz data these estimates on a simplified representation of the river network. Click on the Map options tab to get started or refer to Help tab for more information about the different features and answers to some frequently asked questions. All data unless specifically stated is licensed under a Creative Commons Attribution 3.

Whitehead, A. NIWA, Christchurch. For more information, please see Whitehead, A. Please email us at [email protected]for more information about NZ River Maps or to provide feedback. We welcome comments about how boating maps nz data make this webtool more useful. Research on hydrological indices, wetted width, bed sediment cover, fish habitat and invertebrate indices was also funded by eFlows.

Whilst NIWA has used all reasonable endeavours to ensure that the information contained in this website is accurate, NIWA does not give any boating maps nz data or implied warranty as to the accuracy of the information contained.

National estimates at unvisited sites are designed to represent regional patterns and should not be used to replace site-specific studies. Use these menus to choose which prediction variable is displayed on the map.

Predictions are grouped within variable type. Select the Create Colour Datz option to categorise numeric data into three classes. The popup slider can be used to set the breaks. The data provided in NZ River Maps is made available to download free of charge to allow you to use it for your own research.

Select your desired metrics. All predictions within a selected metric will be added shown in the table below and will be boatiing to file for downloading. Choose the desired spatial scale for the download. Visible on map will only download data for those reaches currently shown on the map. You can alter the map view using Select view mode on the Map options tab. Click the Download data button to download a csv file of the selected data.

Click the Download metadata button to get an html file with information about the downloaded data, including units and the original data source. NIWA's national estimates are based on statistical mapw that relate observed patterns with landscape-scale patterns and then generate estimates on the entire New Zealand river network. The estimates represent bkating in the recent past.

A range of hydrological, ecological, environmental and water quality-related metrics have been plotted onto Version 2 of the National River Network River Boating maps nz data Classification, RECv2.

Each river reach is coloured by the estimated value of the selected variable, mz the line thickness representing the Strahler stream order. A description of each variable can be viewed when the variable is selected in the Map options tab. A reference and link where available to the relevant paper or report is also provided for more information about how the metrics were calculated.

Zooming into the map will provide higher resolution data. After zooming or panning the map, press the Update map button on the Map options tab to redraw the map and see more. Use the Select view mode option to boaging between viewing all rivers or all reaches for a selected catchment.

The Plot flow tab allows you to view the estimated flow duration curve for the selected reach. Enter a discharge flow into the text box to calculate the predicted time that this flow won't be exceeded. Select the metrics of interest and the appropriate spatial scale.

You will be able to view the data table prior to download. Boating maps nz data downloads are provided as. A metadata file that describes your downloaded data is also available for download as an.

Please cite the original source of the data provided in the metadata. The predictions shown in NZ River Maps represent the outputs of models that have been made at the national scale. While these predictions are as accurate boaging possible, given the data used to make them, national predictions at unvisited sites are designed to represent regional patterns and should not dat used to boating maps nz data site-specific studies.

NZ River Maps provides the ability to visualise national-scale predictions of metrics describing hydrology, ecology, water quality and landscapes. These predictions have been generated by NIWA and represent a static snapshot of predicted values across all New Zealand river reaches.

However, for practical reasons, we have boating maps nz data the stream orders that are visible mpas each zoom level to speed up the plotting on the map. You can view the data at a higher resolution either by boating maps nz data zooming closer into the map and pressing the Update map button boating maps nz data 2 selecting a single catchment using the Select view mode option.

If you wish to make more detailed maps, we suggest that you download the data of interest and map these in a GIS software. The underlying REC2. Therefore, this website does not show any predictions for lakes. The catchment names provided in the National Predictions dataset were derived from river names identified by the Soil Conservation and River Control Council in Where these are not directly named after the commonly-used river boaating, they typically describe the boatinb of the outlet to the sea.

The national river network was designed to represent confluences; where two rivers join as they flow downstream. A boating maps nz data rivers in New Zealand have diffluences; where the river splits into two channels as it flows downstream. These diffluences are not well represented in the river network due to ambiguities boatin their upstream characteristics e.

Estimates downstream of diffluences e. We've found that NZ River Maps sometimes runs into issues when using Internet Explorer and will ask you to reload the page. To avoid this potential problem, we recommend that you use either the Google Chrome or Mozilla Boating maps nz data browsers. If you continue to have problems, please let us know at [email boating maps nz data so that we can try and resolve the problem.

Suggested citation Whitehead, A. Disclaimer Whilst NIWA boating maps nz data used all reasonable endeavours to ensure that the information contained in this website is accurate, NIWA does not give any express or implied warranty as to the accuracy of the information contained.

Select map view Select an option below to choose which rivers are visible on the map. Select view mode All catchments Whole region Single catchment. Select transformation Log10 SquareRoot None. Create colour bins Flip colour scale. Select a reach to draw the predicted flow duration curve. Flow cumecs. Select metrics. Choose spatial scale Visible on map All of NZ. Download data. Download metadata. Understanding the National Estimates NIWA's national estimates are based on statistical models that relate observed patterns with landscape-scale patterns and then generate estimates on the entire New Zealand river network.

Plot flow Tab The Plot flow tab allows you to view the estimated flow duration curve for the selected reach. Frequently Asked Questions Click on the questions below to reveal the answers.

Please email us at [email protected] if you have any further questions. Why can't I see more detail when zoomed to a large scale? Why are there no national predictions for lakes? Where do the catchment names come from? What's happening in the Lower Rakaia and Lower Clutha?

Why does NZ River Maps keep crashing?


System Requirements Minimum Your device must meet all minimum requirements to open this product OS Windows 10 version Consents and Compliance We work with the community to promote the sustainable management of natural physical resources. Submit Cancel. LAWA LAWA provides environmental monitoring data about the quality of our rivers, lakes and beaches, water quantity data including water use, live river flows, and rainfall and groundwater levels air quality. Our team will review it and, if necessary, take action. The Garmin GLO has temporarily shut down in the past, so it is essential to have the other device running especially when operating in hazardous areas like busy channels, near shoals or barely submerged hazards such as wrecks or isolated rocks.


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