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What have we been up to?

  • Added handles to brush on the monitoring location page hydrograph
  • State of hydrograph saved for bookmarking/linking
  • Display upstream basin from NLDI for each monitoring location
  • A number of additional graph server parameters
  • New data services for monitoring locations

Brush handles added to monitoring location page hydrograph

Based on user feedback, the team upgraded the brush and zoom capability on the hydrograph by adding handles, making it more apparent that the zoom functionality is available and making it easier to use. The handles are also big enough for use on mobile devices.

Screenshot showing dark blue handles on either side of the brush tool to allow for zooming in to a specific place in the hydrograph

Screenshot showing handles added to the hydrograph zoom capability.

State of hydrograph saved for bookmarking/linking

WDFN serves a huge range of users. WDFN users are now able to bookmark and share a hydrograph in the way that they requested it. After adjusting a hydrograph with custom date ranges and parameters, a person can copy a link from the address bar, paste it into another browser, and it will populate with a similar set of things. Users can share custom hydrographs generated with specific time-series statistics, parameter codes, dates, and compare settings. For example, a user may be interested in the changes in gage height at the USGS gage Colorado River at Lee's Ferry, AZ over the course of the November 2012 Glen Canyon Dam High Flow Experimental Release. After choosing a custom time range and the gage height parameter, the URL in the browser can be used to share or return to the same settings.

Use NLDI to display upstream basin from each monitoring location

By utilizing the Hydro Network-Linked Data Index (NLDI), monitoring locations are able to be put in context of a catchment or basin. Each active stream site has an upstream basin in NLDI, as you can see here:

A user who is interested in knowing the upstream basin for a site is can now see it on a monitoring location page map. Showing the upstream basin allows users to better understand if the contributing basin for a monitoring location is large or small, or if downstream locations would be affected by a spill or hazard, among various applications. There are already upstream and downstream NLDI calls in on the monitoring location pages.

Screenshot of the upstream basin for monitoring location 05370000, Eau Galle River at Spring Valley, WI

Screenshot of the upstream basin for monitoring location 05370000, Eau Galle River at Spring Valley, WI.

New parameters for the graph-images service

One of the most common requests that we get in feedback is that users want to be able to download an image of the hydrograph. We started on this work with the graph image API, but it only allowed a single parameter, the parameter code.

Now, the image server supports several additional parameters.

Additional features that we are planning to add to the graph server include

  • Adding the ability to request a specific time series, like you can with the monitoring location pages

  • Documenting the API using the OpenAPI standard

  • Updating the date queries to meet international standards

New features and tools

  • We've have taken a first step toward completely reconfiguring how we pull data on the backend, as evidenced by showing the new groundwater daily value graph on the development site. This will be pushed to production soon!
Screenshot of a graph of groundwater data.  There is an orange line representing provisonal data, and a green line representing approved data.

Screenshot of groundwater maximum daily values at CT-D 117 DURHAM, CT. This graph is not yet available on a public site.

What is coming up for next sprint?

  • – page will show a list of all networks with links to specific network pages

  • Presenting statistical information in a standards-driven format

  • Allowing networks to be populated by a CSV

  • Displaying additional network metadata on network pages


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