Quote:
Originally Posted by Bear Island South
the lake level hit 505 today
04/01/2010 03:00 42.6 505.01 0.00
any records for highest lake level?
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I have daily DES data going back to 1982. Today's reading of 5.01 was 9" higher than the previous high for April 1st, which was 4.29 back in 1983. This is the fourth time the water level has gone above 5.00 since 1982. It was above 5.00 for 19 days in 1984, 21 days in 1998, 9 days in 2001, 17 days in 2005, and of course, today.
The largest one day rise was 7.2" in April, 2007. The largest two-day rise was 12.2" in May, 2006. We did not come close to those figures in March.
Quote:
Originally Posted by DueSouth
See the following link for historical max elevations back until 1982 - June 3 maxed out at 5.89 on the gauge; I believe that was 1984 or 1985 -I have some photos (slides) of it somewhere.
http://des.nh.gov/organization/divis.../chart2009.pdf
FEMA list the 100 year flood elevation of Winnipesaukee as 506.
At the current lake elevation and discharge rate of 1,888 cfs it would take about 9 days to get down to a lake level of 504.32 - IF THERE WERE NO MORE RAIN AND NO MORE WATER RUNNING INTO THE LAKE |
It was 1984. Even without any rain, the hills are saturated. Runoff into Winnipesaukee may still exceed Lakeport outflow for a day or two. Typically, after heavy rains, the fastest drop is only about four inches per week.
After note: Friday, 02APR10. To illustrate, between 12-APR-07 and 18-APR-07, the lake received 5.5" of rain and the lake rose 14". Without any additional rain, the lake level rose an additional 3" in the following five days and took several more days just to lose those 3". (Also, the lake's level rose 1/4" yesterday despite the lack of rain)