Lake Level

Rose · 09-19-2007, 10:47 AM

I think there's something wrong with the sensors. The temperature dropped 20 degrees at the same time the lake dropped 4". Then the temperature rose 16 degrees between 6 and 7 pm.

TomC · 09-19-2007, 11:05 AM

obviously temp and depth are two different systems. More likely that the data belongs to some other day when it was 20 degrees cooler and the lake was 4" lower, ie a database probelm...

Rose · 09-19-2007, 12:11 PM

Obviously two different sensors, but I thought perhaps they were sharing a power supply which went wonky and caused a problem. Whatever the case, they know about it and have taken it off line...the data is no longer updating.

LIforrelaxin · 09-19-2007, 12:27 PM

Well I was looking at this thread, I openned another browser window, and looked at both the page for the dam and wier lake level. I noticed two things although you can see the lake level spread sheet data the graph is not opening.... I would say someone is looking into the problem, with the mysterious lake level drop.

On the Dam discharge page I noticed that the outflow has been reduced yet again down to around 210 cfs. This is the lowest outflow rate I think I have ever noticed. Although I must admit I haven't been tracking this for any real length of time. Would this be some sort of automatic reaction to the sudden lake level reading drop at the Wiers? Or is something flawed with that data as well?

CanisLupusArctos · 09-20-2007, 10:32 AM

The outflow reduction is likely a reaction to the forecast. There is no significant precipitation in NH's forecast for at least the next 6 days.

Some outflow must be maintained in order to keep the downstream waters flowing, so what is happening is that the entire river & lake system is slowly draining away with no rain coming to refill it.

NOAA's 14-day climate outlook continues to show the northeast US in above-normal temps and below-normal precip. This time of year, one tropical storm or hurricane could change that outlook suddenly.

Believe it or not, we are not even in a drought. According to NOAA's Climate Prediction Center, northern New England joins the Midwest and the great plains in being the only completely drought-free areas of the continental US. Southern New England and New York State are listed as "abnormally dry", the first step toward drought status.

09-19-2007, 10:47 AM	#1
Rose Senior Member Join Date: Aug 2002 Posts: 498 Thanks: 62 Thanked 71 Times in 32 Posts	Screwy sensors I think there's something wrong with the sensors. The temperature dropped 20 degrees at the same time the lake dropped 4". Then the temperature rose 16 degrees between 6 and 7 pm.

09-19-2007, 11:05 AM	#2
TomC Senior Member Join Date: Apr 2004 Location: Lakes Region Posts: 702 Thanks: 22 Thanked 100 Times in 69 Posts	probably not the sensors obviously temp and depth are two different systems. More likely that the data belongs to some other day when it was 20 degrees cooler and the lake was 4" lower, ie a database probelm...

09-19-2007, 12:11 PM	#3
Rose Senior Member Join Date: Aug 2002 Posts: 498 Thanks: 62 Thanked 71 Times in 32 Posts	Good point Obviously two different sensors, but I thought perhaps they were sharing a power supply which went wonky and caused a problem. Whatever the case, they know about it and have taken it off line...the data is no longer updating.

09-19-2007, 12:27 PM	#4
LIforrelaxin Senior Member Join Date: May 2006 Location: Texas, Lake Ray Hubbard and NH, Long Island Winnipesaukee Posts: 2,876 Thanks: 1,037 Thanked 892 Times in 524 Posts	Just looked at the dam and wiers information Well I was looking at this thread, I openned another browser window, and looked at both the page for the dam and wier lake level. I noticed two things although you can see the lake level spread sheet data the graph is not opening.... I would say someone is looking into the problem, with the mysterious lake level drop. On the Dam discharge page I noticed that the outflow has been reduced yet again down to around 210 cfs. This is the lowest outflow rate I think I have ever noticed. Although I must admit I haven't been tracking this for any real length of time. Would this be some sort of automatic reaction to the sudden lake level reading drop at the Wiers? Or is something flawed with that data as well? __________________ Life is about how much time you can spend relaxing... I do it on an island that isn't really an island.....

09-20-2007, 10:32 AM	#5
CanisLupusArctos Senior Member Join Date: Jan 2007 Location: Center Harbor Posts: 1,049 Thanks: 15 Thanked 472 Times in 107 Posts	Dry times ahead The outflow reduction is likely a reaction to the forecast. There is no significant precipitation in NH's forecast for at least the next 6 days. Some outflow must be maintained in order to keep the downstream waters flowing, so what is happening is that the entire river & lake system is slowly draining away with no rain coming to refill it. NOAA's 14-day climate outlook continues to show the northeast US in above-normal temps and below-normal precip. This time of year, one tropical storm or hurricane could change that outlook suddenly. Believe it or not, we are not even in a drought. According to NOAA's Climate Prediction Center, northern New England joins the Midwest and the great plains in being the only completely drought-free areas of the continental US. Southern New England and New York State are listed as "abnormally dry", the first step toward drought status.