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If you don't know what i am talking about click this: http://waterdata.usgs.gov/usa/nwis/uv?site_no=09070500
if you change the view down to 1 day you can see that that shut her down around midnight and re-open in the morning each day. Is this going to last?
I saw something similar to this on another gage last year. It didn't decrease in numerous steps like that, it just dropped in one (15 min.) step, then was back to normal the next. A big similarity between the two, each day it happened, the difference got bigger, ie lower flow with each consecutive drop. I e-mailed the USGS from the gage web-page, and got CC'd from boss to subordinate saying "Please address" or something, and the next day the graph and data were corrected, no explination, no reply, the wierdness just disappeared.
Conspiracy, piracy, something!
Really, who knows, just part of their data QA I'd imagine...
Yep, probably broken.
__________________ What does education often do? It makes a straight-cut ditch of a free, meandering brook. HENRY DAVID THOREAU, Journal
This may answer some questions (or not). Just thought I would post.
RRFW Riverwire – Glen Canyon Dam Update
May 9, 2008
Glen Canyon Dam Operations
The monthly release volume in May 2008 will likely be higher than in April
2008. A total monthly volume of 790,000 acre-feet is scheduled to be
released in May 2008. Weekday releases will average about 12,850 cfs with
afternoon peaks to about 15,000 cfs and off peak lows to about 9,000 cfs.
Saturday and Sunday releases will average about 12,300 cfs with afternoon
peaks to about 14,750 cfs and off peak lows to about 9,000 cfs.
Releases from Glen Canyon Dam for the remainder of water year 2008 will be
governed by the Equalization Tier of the Interim Guidelines for the
Operation of Lake Powell and Lake Mead (Interim Guidelines). Under the
Equalization Tier, the water year annual release volume can be above 8.23
million acre-feet (maf). For the May 2008 24-Month Study, the controlling
Equalization objective for water year 2008 is an end of water year Lake Mead
elevation of 1105 feet above sea level. To achieve this objective, the
water year annual release from Glen Canyon Dam is projected to be 8.954 maf
with an equalization volume (volume in excess of 8.23 maf) projected to be
724 kaf. These projected values, as well as the monthly release volumes,
for the remaining months of water year 2008 will be adjusted as conditions
change.
This may answer some questions (or not). Just thought I would post.
RRFW Riverwire – Glen Canyon Dam Update
May 9, 2008
Glen Canyon Dam Operations
The monthly release volume in May 2008 will likely be higher than in April
2008. A total monthly volume of 790,000 acre-feet is scheduled to be
released in May 2008. Weekday releases will average about 12,850 cfs with
afternoon peaks to about 15,000 cfs and off peak lows to about 9,000 cfs.
Saturday and Sunday releases will average about 12,300 cfs with afternoon
peaks to about 14,750 cfs and off peak lows to about 9,000 cfs.
Releases from Glen Canyon Dam for the remainder of water year 2008 will be
governed by the Equalization Tier of the Interim Guidelines for the
Operation of Lake Powell and Lake Mead (Interim Guidelines). Under the
Equalization Tier, the water year annual release volume can be above 8.23
million acre-feet (maf). For the May 2008 24-Month Study, the controlling
Equalization objective for water year 2008 is an end of water year Lake Mead
elevation of 1105 feet above sea level. To achieve this objective, the
water year annual release from Glen Canyon Dam is projected to be 8.954 maf
with an equalization volume (volume in excess of 8.23 maf) projected to be
724 kaf. These projected values, as well as the monthly release volumes,
for the remaining months of water year 2008 will be adjusted as conditions
change.
I was wondering why gore is only at about 2 abd half but dotsero was over 5k? is piney and sweetwater putting in that much right now or where is that water soming from?
if you check out the south canyon or glenwood park guage, you would see similarities, even with the influx of the roaring fork river. So my guess is the guauge is broke as there are some dips in the graph, but nothing on the scale of what the shoshone guage is! Besides, I don't think they can hold back that much as the dam is limited on the capacity that it could hold. If that makes sense
yea the gauge has to be broken. There's no way it's going from 1500 to 6500 in 6 hours, not to mention the south canyon gauge shows no fluctuations.
It seems to me that more gauges have been on the fritz this season than usual. Delayed readings, stuck gauges, etc. I wouldnt trust a gauge that shows atypical readings until it returns to a more feasible range.
Linear Mode
