8 Year Monthly Lake Level Summary

Here's a fun chart. This is a candlestick chart of each month for 8 years (2010-2017).

Click on image to enlarge
or click here for a full size downloadable image

A couple of interesting statistics. The eight year high level and low level occurred only three months apart of each other and the difference was nearly 11 feet! That's quite dramatic for a body of water that most people's experience is less than a foot difference during the summer months.  December 28, 2015's high of 663.83 was followed on March 9th, 2016 with a low of 652.92.

As for how much water passed through the gates of Bagnell Dam in those 8 years? About 19,725 BILLION gallons, or technically 19.725 Trillion gallons. That sounds like a lot of water, and it is, but comparatively speaking it's not as much as you might think. By the numbers, it took eight years for enough water to pass through Bagnell Dam to cover an area the size of Missouri to a depth of only about one and half feet (1.36 to be precise), but it was enough that it could raise the level of Lake Michigan four feet. To really put it in perspective? Water flowing over the Canadian Horseshoe falls of Niagara could pass that same amount of water in one year and fifteen days. But it's a tremendous amount of water no matter how you look at it.

Here Come the Leaves

Remember, while blowing your leaves into the lake is not illegal for homeowners it is frowned upon and can lead to a loss of "lake access privileges". Please dispose of your leaves properly this season.

Don't Dump Your Leaves!

Pelicans at the Lake?

I've seen just about every kind of critter common in this part of the U.S. but I have never seen a pelican in these parts before. I should have at least attempted to take a picture, but as someone who has spent a lot of time on the ocean and lived near it, I know a flock of pelicans when I see one, and last night I saw one heading north, seven birds in total.

Was I mistaken? Could it have been another large bird? I'm very familiar with the few large species of birds in the area, Canadian geese, eagles, hawks, buzzards, and blue heron , but these birds were certainly not any of those. I only saw them as they flew almost directly over head about two hundred feet, but the underside wing coloring, the shear wing span, and of course their distinctive head was unmistakable. They looked like this:

A quick check on the Audubon society's web page confirmed that what I'd seen was indeed American White Pelicans. Pelicans. At the Lake?  Yes.

The Audubon Society has a map of their territory.

The grey area, which includes the Lake of the Ozarks (barely) is where white pelicans are listed as "common migration", but apparently small groups of "wandering" pelicans can go just about anywhere. The birds I saw were indeed heading north by northeast and didn't appear to have any intention of stopping. Is it odd they would be heading to breeding grounds this time of year?

Interestingly enough, the Audubon's website has territory projection map that shows the range of these birds increasing due to climate change.

2018 Shootout Meet and Greet Parade of Boats

Best. Ever.

A couple of things changed this year with the Shootout parade of boats on the Dam for 2018. Firstly, the boats were lined up on the sides of the strip allowing the crowds a center aisle to move about. This really made things much easier for everyone to get around and see all of the boats. I'm sure some of the bar owners felt it obstructed line of site of their establishment but from what I could tell it had little impact on the amount of business they were getting. Casablanca, High Noon, Lucky's and all the others were very busy last night.

The center lane was used for pedestrian traffic with boats on each side.

Which brings me to the second welcome change for the parade, open containers. No glass of course, but for the first time since I've been going to the event, you could walk around with a beer in a cup. I know that sounds like an unimportant thing but relaxing open container laws for an event such as this has a rather dramatic effect in general. First of all, people get out and see the boats, not being confined to have their drink in an establishment. Secondly, being able to take your drink away, leaves room for others to come purchase one for themselves, providing for a nice steady flow for business. Win, win. The police were out in full force, polite and professional, but certainly there to make sure things didn't get out of hand. I drove through the strip on the way to work this morning and saw a surprisingly small amount of litter, so everyone did their part to keep things clean. Thanks to the City of Lake Ozark for the welcome changes that made for a great night for all.

More pics!

Things started off a bit slow

On the deck of the recently opened High Noon

Now we got a crowd!

A lot of boat for two people!

People from one end to the other on the strip

Console boats are getting more popular

This boat was the Belle of the ball if you ask me

Power to spare

awesome lighting

Winding down for the night.

Lake TV has a nice two and half minute long video with some cool drone footage mixed in.

New Lake Level Graphing

Data visualization is a hot topic in my industry, and one I personally enjoy despite not being very good at it.  One of the things I've been wanting to do for sometime is to add what are called "candlestick" graphs to the monthly lake level reports. I've done this type of charting before, in February 2014, when Ameren basically sent a small tsunami down the Osage river from a rapid discharge from the lake. I liked the chart, but it was bit labor intensive. I think I've figured out an easy way to produce it on a monthly basis now. For those familiar with stock market analysis, candlestick charts are the preferred graph for looking at stock prices over time. They tend to weed out the "noise" of daily trade prices and focus on the more important trends.

Using candlestick charts on lake levels will allow us to focus more on starting and ending levels and diminish the relevancy of the day to day highs and lows, while visually emphasizing large swings. For those who are not familiar with candlestick charts, or how to read them, they are quite simple but I've written a guide here, as it relates to tracking lake levels.

So here's the first, going back to July's data. (I even dolled it up with a nice background!)

As you can see, there's only 31 data points now, one for each day, rather than 746, one for each hour of the month, while basically providing the same information detail.

I'll try to add other elements to the graph such as the 5 year moving average and flow rate as time allows, but for now, I think this will be a great addition to the monthly lake level post. Hope you like it!

Electricity, ESD, and Your Dock

According to a 2014 CDC report, an average of 3,536 people per year die from accidental drowning unrelated to boating  This is basically an accounting of people drowning just swimming in the water and there are many reasons such tragedies occur but one contributing factor is electrocution, or Electric Shock Drowning (ESD). Just how many of these non-boating related drownings can be attributed to electrocution while in the water is harder to know since ESD statistics are not as carefully documented, but we do know it happens and sadly the Lake of the Ozarks has had its share. Homeowners need to start taking action now to prevent their docks from being a danger to themselves, their families and their neighbors. Making sure your dock is as safe as possible is not only a responsibility, it may soon become mandatory.

Is ESD a new phenomenon, or does it just seem to be happening more often? Electric service on docks is nothing new, but it has become far more commonplace. The need for boat lifts, and the general trend to make living space on our docks has meant more and more power is being delivered over the water. On the other hand, our interconnected world and social media has made awareness of these types of tragedies more prevalent. These two factors, I believe, have both raised the risk and the awareness.

Can we eliminate the risk of ESD? Sure, by mandating that there can be no electrical service on docks. Period. Sound good? Believe it or not there are those that advocate such measures, namely the ESD Prevention Association which believes that docks and marinas should not have electricity and promote awareness to not swim anywhere near ones that do. Others suggest a less radical but inconvenient idea of turning off power to the dock before swimming near it. The main problem with this idea is that it relies on the most unreliable safety feature in any given system, a human being. The idea of eliminating electricity from docks altogether is a simple foolproof idea, but unrealistic for the Lake of the Ozarks. We need power on our docks.

Homeowners on Lake of the Ozarks need electricity for a variety of reasons, not the least of which being boat lifts, marine shore power connections, and lawn irrigation pumps, and they are the most demanding in terms of power requirements. Shore power connections for larger boats typically run 30 amps. irrigation pumps can require 3-10 amps depending on their voltage and pumping capacity, and boat lift air pumps operate in the 1-3 amp range. Along with a smattering of lights, fans, convenience outlets and the occasional small refrigerator, docks typically have anywhere from 30-50 amp services with 100 amps not being out of the question. For a typical 200 amp home service, the boat dock can often represent a significant portion of power consumption. When you consider it only takes about ten milliamps (10/1000 of an amp) to constrict your muscles and only a few dozen to stop your heart, the typical dock circuit carries enough current to kill many thousands of times over. While not all docks have electrical service, blue light requirement not withstanding, the vast majority do. If you do have electrical service on your dock, get it right, or abandon it altogether. The risk of faulty electrical service is high, and your responsibilities are clear.

Any dock installations (old or new) with electrical service are required to pass an inspection, and if you're selling your lake home you can bet the new owners will insist on one, but it won't be long before ALL docks, regardless of age will also need to be inspected and approved. If you want to keep electricity on your dock, you had better get it up to code.

How do you do get your dock up to code? The key word here is "code", and it comes from something called the National Electrical Code (its formal name is NFPA 70), written by the National Fire Protection Association, which is rather odd sounding source I know, but trust me it's been around for decades. The book is huge as one might expect and surprisingly readable, if you're into such things, but suffice to say your average handy-man is not going to be familiar with it and it is very detailed when it comes to safety requirements for electrical power and marine installation. In short, if you want to get your dock up to code, your likely going to need a professional. Of course, just about any electrician with a sign on their truck is going to tell you that they can wire your dock correctly, and many can, there's nothing special about the requirements, but you will want to have it inspected to make sure its right and in most cases an inspection is required. Oh sure, you can hire anyone you like, even do it yourself if you wish, but when the fire department comes out to inspect it and tells you it's wrong and you have to rip out hundreds of dollars of wiring and start over don't say I didn't warn you. I'm an electrical engineer, and trust me, they don't teach NFPA70 wiring specifications for docks in engineering classes. I paid to have it done just like many people do. It isn't cheap either. Depending on the services you need, the size of the dock, and a hundred other variables, your cost can be several thousands of dollars, but considering what it could cost you in lives and lawsuits, just think of it as another necessary expense. No one said living on the lake would be cheap.

Here is a PDF from Ameren that can tell you what will be expected of your installation. It is not intended to be checklist, but it will give you a very good idea of what you're in for. Also, in 2019 a small group of local electrical contractors started the "Lake Ozark Association of Electrical Contractors" in an effort distinguish those contractors committed to safety, but it is a voluntary membership trying to address the fact that Missouri has no state licensing requirements for electricians (not the smartest piece of deregulation in my opinion but I'm just an electrical engineer so what do I know) which creates some trust issues for consumers. Just remember when choosing a contractor, the only thing worse than no safety equipment is badly installed safety equipment.

Update: I've been asked about those "Life Alert" devices that you can add to a dock that detects the presence of electricity in the water. Are they effective? Are they necessary? On the issue of effectiveness, they do work, but they will drive you nuts. They are designed to detect very small amounts of voltage or current (amps) in the water and believe it or not, it happens naturally. Small electrical currents are created by a variety of natural processes. The amount of energy created is very small and harmless but your dock sensor will pick up on them and alert you. Part of the problem with any safety device is "alert fatigue". If you're constantly being bombarded by false alerts, you may not pay serious attention to one that is real. Hats off to the two engineers who came up with the idea, but it is fallible, and can easily lure you into a sense of safety that may not be justified.

Are these devices necessary? Not really. If you're dock is wired correctly, and periodically inspected (docks move and connections fail), the safety features of the circuit itself will protect you from harm. However, if you feel better having a dock alert system than by all means install one. Just be aware that if your lake home is a weekend destination, you will probably want to shut power off at your dock when you leave to avoid driving your neighbors insane with alarms going off all week while you're gone. Ask me how I know. :)

June 2018 Lake Levels and Flow Rates

Late on the post for June levels, but it's summer after all. Lake levels are where they should be and behaving predictably. Nothing notable to see and that's a good thing. Keep in mind the narrow range of data makes for an exaggerated graph scale. In reality, the difference all month long in lake levels is little more than 1 foot.