New River Levels Website - Details
The new web site displays data from 335
gauging stations. To accommodate this, improved text search
facilities have been added as well as the ability to sort the list
of level recording stations by various columns..
An improved map interface allows zoom and pan
functions. The zoom extent can now be saved by pressing
the “remember current map position” button (saving the zoom extent
requires cookies to be enabled on your computer). Pressing
the “remember position” button again will reset the saved extent to
a new position. A shortcut to the zoomed view can also be
added to favourites by choosing Bookmark Page.
The graph display has been modernised and
includes more background information from the station
records. The background information is different from the old
site since the data needs to be generated automatically. A
new Current Level Indicator is available that displays the last
recorded level in context of historical high and low levels.
The latest level is highlighted on the
indicator by the dashed line and adjacent pointer. The range
of high, low and normal levels has been identified as red, blue and
green areas.
For the purposes of this indicator the ranges
have been defined as follows;
- High – Above the median annual maximum
level
- Normal – Between the median annual minimum
and the median annual maximum
- Low – Below the median annual minimum
The definition of these ranges is indicative
only. Levels in the normal range may still be considered high
in some respects and may be extremely dangerous for some
purposes.
Changes To URL Structure
The following XLS document provides a list of all the new urls
for each station and how they compare to the old
structure. You can use this to update any links to stations
that you may already have bookmarked.