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50599Re: Virgin River way down?

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  • Cliff
    May 5, 2013
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      I find it interesting that the north fork is so low, and yet the east fork is right at average. Could there have been that much difference in snow levels, or in rate of melting? Cliff


      --- In Zion_National_Park_Hiking@yahoogroups.com, "Glenn Ray" <glennlray@...> wrote:
      >
      > You nailed it Joe. The flood mode peaked on April 30 and has been dropping since.
      >
      > What's unusual is that the daily cycles have stopped since May 1 and haven't been above 150 cfs (the cutoff rate) since. It's almost as if something's damming it all up.
      >
      > --- In Zion_National_Park_Hiking@yahoogroups.com, "Joe Braun" <joe@> wrote:
      > >
      > > Continuing the numbers game since I love checking the USGS North Fork water guage and comparing it to the Kolob SNOTEL report... The Virgin River is now in flood mode spending the last 4 days well above 100cfs. This corresponds to a big meltoff above; in April, we averaged maybe one inch of snow meltoff a day. Over the past week, we're seeing 3-7 inches of snowmelt a day which is making the Virgin spike. The Kolob snow depth is down to only 6 inches now, so I'm betting that the Virgin will go well under 100cfs in the next 5 days.
      > >
      > > This is several days ahead of last year which was already a very wimpy spring runoff year. -Joe
      > >
      > > --- In Zion_National_Park_Hiking@yahoogroups.com, "Glenn Ray" <glennlray@> wrote:
      > > >
      > > > Because I'm a numbers junkie, I've plotted the North Fork river levels for 2012 and 2013. It looks down from last year with no positive trend in sight.
      > > >
      > > > The spike in mid-January came right after an equipment malfunction, so it may be related to that (the peak was 10.04 feet).
      > > >
      > >
      >
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