On Oct 19, 10:24*am, DaveS wrote:
How close to realtime is the data you can access?

At http://montana-riverboats.com, if you hover the mouse over
"Stream Flows" at screen middle bottom, you get (most of) Montana's
most important flows in a popup panel, updated nightly, using cron
and a little php/curl screen-scraping...querying the gov flows site at
3:00am
in the morning mountain time.

It takes about 90 seconds to complete, so it can't be done from a
mouse click.
But they only update the data once a day anyway. So once a day
updates are as good as it gets.