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Topic Title: Salt-water intrusion vs. Opening the locks at the port.
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Created On: 04/07/2018 04:28 PM
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 05/09/2018 06:15 PM
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dingpatch

Posts: 12781
Joined Forum: 07/24/2003

Again, , , , , as a very wise Old Boy told me many years ago, , , , The Shit, , , , has Got to Flow, , , ,
 05/10/2018 04:21 AM
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worksuxgetsponsered

Posts: 7745
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Originally posted by: TeeBirdForever

In an attempt to decrypt the wiki article, the diffusion equation says that the rate of change of density (of groundwater in soil in this case) at any point with respect to time is dependent on the the rate at which that density changes with respect to position. Stated even more simply, liquid tends to spread out, though that won't help you predict the amount of flow; time rate depends on space rate is both elegant and non-trival and the solution to a differential equation is a function or an approximation thereto.




Note that for groundwater you would have to add a gravity term.



Not sure if they still use this method, but back in the day we used to perform double-ring infiltration tests and my were they a pain in the ass.





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 05/10/2018 05:21 AM
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tom

Posts: 6141
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Hey Ding,

I'll see your wise ol' boy and raise you a Plumber's Law.

Plumber's Law:

1. Hot on the left.

2. Cold on the right.

3. Sxxx flows downhill.

And, downhill anywhere in the IRL watershed,

is the Lagoon.  You get the idea.

 

Matt - was that the septic tank moratorium?  Link didn't work.

https://www.floridatoday.com/story/news/local/2018/04/26/brevard-county-commission-pushes-moratorium-installing-conventional-septic-tanks/553964002/

 

 



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 05/10/2018 09:08 AM
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worksuxgetsponsered

Posts: 7745
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Wish they would do that in Orange County as well. At least in moderate to high density housing areas.

Tom- finished that GIS project, it went well. It was very basic, just did a comparison on nutrient loading in 2 orange county lakes, one impaired the other not (yet anyways). I did use the SJRWMD land use layer. I may have to hit you up for help again next semester.

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-Isaac Asimov
 05/11/2018 04:13 AM
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Cole

Posts: 34852
Joined Forum: 07/22/2003

Orlando is stepping up their monitoring, they will be installing dozens of stage sites over the next six months, with plans of water quality too. It's a shame things have to fall apart before people notice there is a problem.

People, science is NOT the enemy.

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 05/11/2018 05:12 AM
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tom

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Well done Sux!  Keep after it, we need more people who understand both the situation and the toolkit.

I wish I had better GIS skills, no formal training, just kind of a user.

Old guy, haha, I wrote my thesis on floppy disks. 



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 05/14/2018 05:09 AM
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TeeBirdForever

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That infiltration test gear looks cool, WSGS, and I can't say I understand how it works.

Again, glad some scientists are on the job.

 05/14/2018 06:05 AM
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scombrid

Posts: 13600
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I am a little bit worried about the Banana River dissolved oxygen today. Chlorophyll is at 300 ug/L according to the sensor up by 520. That is severely high. Heavy overcast could stifle photosynthesis. DO started trending down yesterday.



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 05/14/2018 11:13 AM
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worksuxgetsponsered

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The short and sweet on the DRI is the two rings are pounded into the ground to a certain depth (the smaller ring is taller), and there are graduated marks inside both rings, you have to maintain the water level in both rings, while tracking time and volume for each over X number of hours. It's very easy to loose track and very tedious. We often did it in conjunction with slug tests over an area. That's how they got the infiltration rate, mostly for building retention areas and stuff. I hope they've come up with something a little more user friendly by now.

DO started trending down yesterday.


Not a good sign. You know what it was? <5mg/L things start to go bad.

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Edited: 05/14/2018 at 11:39 AM by worksuxgetsponsered
 05/14/2018 11:32 AM
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waterlizard25

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rain rain go away another fish kill on the way

more like

people people move off the river our lagoon cant get any sicker



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 05/14/2018 11:51 AM
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tom

Posts: 6141
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The ORCA Kilroy real time data are here. http://api.kilroydata.org/public/

There's a button you can hit to plot past data.   

And, FWIW:  IMPORTANT MESSAGE: As of July 1, 2017, the State of Florida has reduced the funding required to maintain ORCA's Kilroy Monitoring Network. This funding cut has resulted in the reduction of the state funded Kilroys from 25 to 8. Your generous support is needed more now than ever to help us carry on our vital research. Please consider making a donation today. All donations are tax deductible. ORCA is a non profit 501(C)(3).



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 05/14/2018 12:22 PM
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worksuxgetsponsered

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Dissolved Oxygen 5.475 mg/l
Dissolved Oxygen 78.65 % Sat.


From Tom's link.

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 05/15/2018 05:36 AM
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Cole

Posts: 34852
Joined Forum: 07/22/2003

At this stage the rain is a good thing. The DO is bumping up.

Now we have to contend with all the crap that rain flushed into the lagoon.

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 05/15/2018 07:07 AM
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RocketSurf

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Another idea for water retention. I plan on digging French drains under all my downspouts to try to hold all my roof runoff water on my property to limit the amount that flows into the canal behind my house.
 05/15/2018 10:37 AM
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Greensleeves

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Cool Rocket



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 05/15/2018 12:49 PM
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3rdworldlover

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Worksux, you nerd!
Don't make me post the coke bottles pic!
 05/16/2018 04:18 AM
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worksuxgetsponsered

Posts: 7745
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Originally posted by: 3rdworldlover

Worksux, you nerd!

Don't make me post the coke bottles pic!



those were called birth control glasses.

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People that think they know everything are a great annoyance to those of us who do.
-Isaac Asimov
 05/18/2018 07:18 AM
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stokedpanda

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Originally posted by: RocketSurf

Another idea for water retention. I plan on digging French drains under all my downspouts to try to hold all my roof runoff water on my property to limit the amount that flows into the canal behind my house.


Another idea is to create some rain barrles, my mom made two to catch roof water to use on her plants....i pimped it out by painting a redfish, tarpon, snook slam on it......used to be able to catch all three in the canal behind their house on 4th st south

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 05/19/2018 04:27 PM
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cheaterfiveo

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Just wondering why the west coast of Fla is so pristine. There are way more people, houses and boats running on that waterway. Seagrass is abundant and there are lots of inlets. Must be the poop

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 05/20/2018 06:42 PM
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Cole

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Originally posted by: cheaterfiveo

Just wondering why the west coast of Fla is so pristine. There are way more people, houses and boats running on that waterway. Seagrass is abundant and there are lots of inlets. Must be the poop


Flow I would imagine.



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Dave doesn't like me.
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