Waimea River - How to make waves

[@MazorKuziaki]

To those of you wondering about how this effects the ecosystem, they are doing this in the Waimea River in Hawaii. Every year, the high surf causes flooding that displaces animals, fish, people, and even plants. Annually, a group digs a trench like this one to ensure the safety of the environment.

[@jahmic]

Thanks for posting this!

[@99potoy]

Keyshell I am looking for this comment/answer because i want to punch those fucking Idiots,if they just do it just for fun...

[@NicholeHerrin1994]

Keyshell Thanks for posting this. I was wondering about the after effects of it! Good to know there wasn't any harm to the ecosystem

[@chaosorder7009]

Keyshell where's the proof? show me you sources!

[@MazorKuziaki]

Chaos Order The proof is in the description. Look it up.

[@DaRealMaverick]

Calm down KZbin environmentalists. Waimea River naturally flows into the bay. The high winter swell waves blocked the river mouth with sand. No water was lost that wouldn't have drained into the ocean. In Hawaii everything drains into the ocean, we're on islands. No species were lost, all native Hawaiian fish and crustaceans that live in the lower river region spawn or live in brackish to salt water.

[@IAmGunzNoob]

Maverick Quartero They think Waimea is somewhere in Africa where water is so sacred.

[@XCyclonusX]

IAmGunzNoob No its because the KZbin Environmentalists saw the one thing that enrages them. Human beings having fun. Fuck em, they're cultists who think humans are a virus.

[@DaRealMaverick]

quantumbits it's not a lake. It's an actual river. They are digging where the mouth of the river usually is, but got blocked off by high surf. The sand is removed throughout the year by the state to allow the water to flow into the ocean.

[@DaRealMaverick]

quantumbits I hate to restate this again, because it was in my original comment. The Waimea RIVER is supposed to flow into the ocean, but it was dammed by sand created by the high surf. Once again RIVER, not lake. The Native Hawaiian species that live in the lower region of the river, like exactly where it was draining from, naturally spawn in brackish to salt water. They basically opened a dam that was not supposed to be there.

[@chemchemchemacky]

+Maverick Quartero Rivers close naturally to the sea all the time - this includes when high surf dams them with sand (like you said). Ergo, that dam is supposed to be there. This could remain closed for a number of years, and the water would still remain salty. All rivers (and most coastal lakes) eventually run into the ocean, and this likely would have opened eventually by itself, but its not really good practice to go an open every coastal flowing river just to surf when there's no swell. These types of rivers (in Australia at least) are called Intermittently Closing and Opening Lagoons (ICOLs), and they serve a great purpose in diversifying fish DNA. As fish are trapped in the ICOL when it closes, they breed for sometimes up to years creating new genes and adaptations to those particular conditions which once the ICOL opens those new genes are released into the general population of fish. Councils often artificially open lagoons like this, and you can safely bet (in eco-wise countries anyway) its not done without environmental consultation. I'm not saying they're causing great damage by any stretch of the imagination, but I think you're pushing your agenda without knowing/listening to all the facts. And it really is as simple as, if you're changing the environment, it's going to have an affect on the things that live in it. In freshwater ecosystems, damming water for water supply (and of course allowing water out for the river downstream of the dam wall to exist) is called river regulation. This is a well studied affect of altering ecosystems, and it most definitely results in a drop in biodiversity - world wide. This isn't as simple as "greenies" not wanting people to have fun.

[@aldencrabb713]

The best bit of human - environmental release of energy that helps all whilst having fun at the same time. Truly man in harmony with the forces f nature!

[@emanuelh-fln8837]

KZbin me recomendando novamente depois de 10 anos! Oh tempo bom!!! 🏄🏻‍♂️🏄🏻‍♂️

[@OnePercentt1]

RIP earphone users @ 4:45

[@seifeldin224]

Luigi Urquico thanks for the heads up :D xD

[@jeffogar7088]

Luigi Urquico If only I saw this warning 4mins and 45sec earlier... X_X

[@gui18bif]

+Lui Angelo TAMO AQUI DIRETAMENTCHI

[@WolfyLife]

+Lui Angelo IT BURNS, IIIITTT BBUUURRNNSSS

[@Buddah_Mob]

Lmao

[@colincarguy]

millions of years of a river and body of water and a river existing in 2 separate places...and a couple of guys get together and in a few hours connect the 2...i dont think thats going to jus shut itself off. Bravo, you are epic

[@AaronHorrocks]

If I did this somewhere in California, I'd have three different government agencies show up and arrest me!

[@TheMIghtyDago]

Aaron Horrocks lol that's so stupid, you should still do it though

[@nopoopallowed]

ya with good reason

[@TheMIghtyDago]

***** damn dude that sucks for italy

[@Vinnay94]

Yeah makes sense, the government wants us to pay for there wave pools that use machines. Fuck the police. I'd love to try it where I live in Australia though because our waves aren't that great.

[@Taurus_Play]

Vinny V OMG, idiots in video destroing ECO system of the river .

[@surferdude330]

I miss you Haleiwa, Pupa kea, Waimea, Pipe, Sunset. Sandy, Makapu. But I will never forget you. I road your waves in the early 70s when we were trying to figure out what's it all about. Lost my dearest friend in a wave we dropped into.

[@zannettos]

will the place be as it was before?

[@chrisx5504]

no, probably not. In fact even if the river is also salt water, with the amount of water being drained from it, that means another part of the river with a stable ecosystem will now suffer as less water will reach. But hey, small price to pay to go surfing for a few hours.

[@lot3oo]

Chris X Actually, by the little difference in the height of the river and the ocean, im pretty sure its going to fill back up at night when the level of the ocean rises.

[@ThatAdelaideGuy]

alex zannettou Yes, they do this every year

[@TheMontanaDave]

Chris X Dude, this happens many times a year. It self fixes. Get your fucking facts right before anymore sewage comes out of you.

[@Eon-Nova]

all they had to do was dig a little tiny trench between the ocean and the river to cause that to happen. surely it happens on it's own when the tide is high

[@T3SKATLIPOC4]

...I was gonna just start shooting everyone, but actually loved how much fun this is 🙏hare Krishna, Prabhu

[@christopherqueeneonwindowa6982]

they have been doing this for years , I was a military brat, lived in pearl harbor from 72 till 76 and saw this happen a lot. Waimea Falls feeds that lake. formed by huge ocean swells pushing sand up as a damn, locals are just freeing it up. The falls dump a lot of fresh water daily. so its not unusual. not from flooding thats for sure

[@bbwalkswithmaxx5439]

Hello!! I saw this a year or so ago and posted it on my fb page. Its been on my mind lately so I went back and found it again. It just makes me feel good, the waves the music the fun!! Love it!! TY for posting!!

[@larissawright1135]

I've always wanted to surf. I've complained about the lack of surf for years in kansas

[@windy619]

write your assemblymen. more surf!

[@gr8o2h2o]

Got tornadoes? I have surf board. Do you know Noah...I got a surfboard. Do you have Haarp machine, then you have flood and water....I got surf board....Hehe...

[@bp968]

Pretty awesome idea. For those of you in the states saying you wish you could do this, you can (sorta). Plenty of rivers you can surf on (in a SUP or a Kayak). Of course its not nice soft sand on the bottom, its large, undercut rocks, so screwing up is slightly more dangerous ;)

[@damnyell101]

Is anyone else concerned that they could have just drained a fresh water lake into the ocean, unless it's salt water. If not salt water then Isn't that environmentally unsafe and illegal?

[@volpa123789]

damnyell101 Its written in portuguese in the description. This is the Waimea River in Hawaii, almost every river flows to the sea a way or another.

[@dwightperry]

same question?

[@RealTalkWithMitch]

damnyell101 This river naturally flows into the ocean at the right time of the year mate. What they are doing isnt too harmful

[@TheNoratek]

Any river near the Ocean flows there eventually, they create so called "Deltas" there. A Delta is something where the river transports sediment into the ocean, the transported material forms the Beach you see in the Video. A River changes course very often in those deltas.(Often in a timeframe of 1Million years and more). So no Problems environmentally, they disrupt the River and the very end and it is likely that sometime ago the river would have gone along that very path anyway. Hope i could help.

[@kristoffersagmo]

Every winter on the North Shore of Oahu the high surf dams the Waimea river-mouth with sand, and the heavy rains flood the valley. To counter this they have to open it up and since it creates some nice waves, surfing it has become a yearly tradition over there.

[@ItsUrMom306]

This is one of my favorite vids on youtube, i usually watch it ever 6 months or so lol.

[@kaimango7012]

Love how people belief that this does hurt nature. Did you people even see how considerably small the trench even at the end was? The width was maybe ten bags of sand, the height between one and four. Give that river a few hours of rain and it would overflow way more uncontrolled than that. But then again, people on the internet are overreacting idiots as 90% of all videos with comments about "animal abusal" can show you.

[@pikachu5021]

I don't care about nature I care about fun

[@billsmith8397]

That's why we are killing this earth. How do you expect us to survive?

[@dustingdustin]

While catching an awesome wave, that's how.

[@YanFerraz]

saudades Garrafinha, sempre curtindo e aproveitando a vida! Mlk era ação e sorriso puro! RIP bro

[@calutzubarzini1091]

4:50 " O japones já virou sushi " Brasileiro é foda, ta em todo lugar e sempre acompanhado da zuera kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk =D

[@jeremyisdrunk9915]

WHO WOULD DISLIKE THIS?!!!!???looks like an island LOVE IT

[@Nitrobucket]

how does the trench not keep getting wider and wider and eventually wipe out the beach?

[@VeteranSoldier]

I think the river evens out before that happens but you can see it does get wider and wider throughout the video, until you see the water rushing begins to die down....

[@susanneplays1545]

+Nitrobucket it will go back to normal with the tide

[@ClayClaim]

This is nice! Thank you for your work :)

[@salsamanrocks]

that is soooo awesome can u make a tutorial?

[@Californiaguy03]

For all of you freaking out over "the environment" i can safely say i was just here today (05sep12) and everything is back to normal. no wild life destroyed or eco systems destroyed. no need to walk around or build bridges. the beach looks just as it always has.

[@doihavtasay]

What is the music, please. :)

[@julianwilliams99]

midomi

[@gustavowesly4801]

Show Mulekes Arrebentam! Muitos Criativos! E NOS!

[@pollorylala6278]

i wonder how long does the water last

[@DAMIENDMILLS]

a year before natural flood by higher tides

[@Pescadinha123]

que lugar e este louco ? muito doido mais como e que vcs fecham o rio novamente? muito loco o video !!!

[@noahregan4040]

this happens every year the lake over flows anyway they just sped the process up

[@theantiblastfamistro]

It actually made it better! The river being broken allows all of the bacteria and microorganisms to die, making new ones. This allows the river to be cleaner and not smell so bad. Plus, it provides food for all of the Kumu!

[@ericeinarson6654]

Really cool but the effect that the erosion will have on the beach is pretty serious.

[@jamesdoe5824]

The large swells of the winter in Hawaii cause the rivermouth to be damned up with sand which floods the river. The river eventually let's out on its own so by them doing this it doesn't impact the beach. This beach has looked the same for the past 50+ years. There's no harmful impacts

[@5onET]

Oh maan I just came back from Kauai today and saw this spot! I thought it was hella cool how there was a beach right between a river and the ocean! I watched this video and I wish they did this again! haha

[@raphaelsartori]

Well... that escalated quickly.

[@Kurdruku]

this is seriously one of the most awesome things i have ever seen

[@philseddo]

R.I.P to all the people in that small coastal fishing town in Japan that died due to a Tsunami caused by these hippies.

[@jamesdoe5824]

Do you know that the river does this naturally every year so this makes no difference?

[@susanneplays1545]

+Kaipo Fitisemanu He was sarcastic i think XD

[@sirshuz]

i wish i lived in hawaii and knew how to surf. that looks awesome!

[@Svendehenne]

I'm not trying to be a party pooper or anything, but aren't they destroying an eco system by doing this? What about all the fresh water fish in the river?

[@NathanPeckProfile]

The Waimea River naturally damns up with sand every year, and even without human intervention the sand damn eventually breaks and releases the water. By digging to get it started on a particular date this just ensures that surfers can enjoy it instead of it happening when no one is there to appreciate it.

[@Svendehenne]

Nathan Peck I have no knowledge about this, so thanks for clearing it up! But how does this happen? Naturally breaks and releases water, then naturally dams up again? Does the river start getting too "high" and start releasin water? How does it dam up again?

[@NathanPeckProfile]

The winter tide and storms push the sand up into the entrance to the river, damming it up. Eventually rainfall causes the river to fill up to the point that it spills over the sand dam, and the water spilling over erodes away the sand, and it all washes out exactly as in this video. These guys just dug a notch to start the dam break early, during a convenient time for surfing. If they didn't do so it would have probably washed out some day when it was raining and the river spilled over the dam naturally.

[@kingdre202]

Am sure that during the months that the river is dam, fishes come up to breed so by removing the sand out of the rainy season would definitely alter the ecosystem which could probably lead to loss of species.

[@claudiomaracatu]

Guys, just leave nature in peace! There are so many nice places to go surfing, you know? I did read many comments here and there...still think that it's a disaster caused by them, sorry...and if it gonna happen anyway wait for it then!

[@MrLargonaut]

This is either significantly awesome (if it was just a massive tidal pool on the beach that they cut into) or a bit of a disaster for the beach. I want to jump right in n have a good time, but how long will it take tidal deposit of sand to fix it/reset everything? If its even relatively fast (less than a year) then i say hit it as often as ya can. If this doesn't naturally fix... what kind of impact did that just have on that other body of water...

[@TheVirtualpotatoe]

Anybody see that thing under him at 2.22

[@willisyoung7036]

yup sure did that was a fucking shark haha

[@coorkie]

Naytheen Vanrooi Looked like his shadow to me lol

[@ReliableMyke]

That's his shadow, moron.

[@soulschizm4427]

ReliableMyke Def not a shadow. you can see the dudes shadow before 2:22 but there is a white looking thing that passes him then a dark looking thing neither are his shadow.

[@MrBass89]

Other than his shadow that appears first and once The first grayish one was a shark and the second darker under the water looks like a sting array

[@3xceed]

That area where the big wave was, was there a big lump of sand there or was it just a really big constant wave?

[@TheAnantaSesa]

Lol.

[@joaopaulocosta4155]

Isso não é crime ambiental?

[@antoniogarciacusme3113]

Para nada

[@stephenolan5539]

On Lake Ontario at the Rattray Marsh sometimes there is a shingle bar. A small creek drains into the Lake. Wave action will wash small stones and debris up on shore and will slowly build a dam. The marsh fills up with water as the dam gets bigger. Eventually there is so much water in the marsh (now more of a pond) that the water starts going over the dam and washes it away. I've never been there when the dam gets washed away but one time a fair sized tree was washed away with the dam. I think what is happening in this video is about a 100 times bigger but something similar is happening. You wouldn't be able to surf at the Rattray Marsh but it is a protected area and when it drains it's great for bird watching as there is now lots of food for them. My concern with the video is what if people were on one side but needed to get to the other side.

[@medviation]

one way to dry a lake and wash away a beach

[@Master0fHyrule]

is this coming from a lake and they pour it into an ocean?

[@Anubis7169]

12 small species dieded that day, nevar forgot.

[@bmansson]

Anubis7169 dieded?

[@simonking195]

Anubis7169 they will be remembered as an hero

[@58cedrick]

Anubis7169 For the people saying this is damaging to the ecosystem... this is a controlled breach approved by conservationists. The river is naturally blocked every year by sand dunes which causes the valley to flood and fill with water. The river will eventually swell to top the dunes and create its own breach. This is just doing so in a controlled manner.

[@IAmGunzNoob]

Anubis7169 Who cares 90% of the native species in Hawaii are gone.

[@susanneplays1545]

+58cedrick Ever heard of sarcasm? He was obviously commenting on how dumb the enviromentalists sounds like :P

[@miguelgzp]

criatividade brasileira sem limites!!

[@אושראזולאי-ל5ל]

sure. now put it back..

[@MagicalWellecto92]

That's New Zealand reggae right there...coming back home

[@roygould9454]

The death of thousands of fish, prawns and worms as the estuary waters flowed out to sea through the artificial opening they dug is expected to rival the massive kill there of December 2012.

[@litnor4616]

Drains every year as a part of a natural process anyway. Sand washes ashore during winter months and creates a natural dam. Nice try though. blog.swell.com/post/waimea-river-surfing

[@roygould9454]

It would like to drain naturally. In a way that nature designed. The problem is, some people have decided that fun is better than natural.

[@litnor4616]

+Roy Gould those people being nature conversationalists. They're actually preventing harm to the local ecosystem that flooding would cause with their intervention. Focus on an actual issue rather than fabricating one to satisfy your information.

[@roygould9454]

I have seen the aftermath. The sudden influx of silt and fresh water into the bay killed a lot of sealife. You will never admit the truth and the moron who thought this up is the wrong kind of conservationist.

[@peytonhaak963]

Ahh you fool. Anyone who has been to Waimea should know that all of that water is salt water from high tide with some potential rainfall.

[@dada236]

I've heard (some comment made here years ago) that its a lake that fills up anyways and eventually still does this kind of river. They are just helping it happen.

[@JimmyLLL]

Yay, lets drain a lake to make some waves for about an hour or so. Don't worry about the fish, birds and reptiles that rely on the small ecosystem.

[@JimmyLLL]

***** Gee your're so bloody original. Let me guess 15 years old?

[@JimmyLLL]

***** It's a very wasteful act for short term fun.

[@dominiquelaki769]

Not being a smart-ass but you do realize all's they did was divert a current, the current still ended up back in the sea. It's still being pumped back into the sea.

[@Clutch1226]

Jimbob how is it wasteful? Enlighten me

[@JimmyLLL]

Zalgoret Warlock How the hell do you divert a current? Think about it for a minute.

[@MrrrrTony]

@AC Brito: the song is sung by The Black Seeds and it's called Coming Back Home

[@love1234458]

destroying the eco system

[@numbnuts375]

in what way

[@808fishman8]

Lmao how?

[@love1234458]

connecting a river so a sea

[@pokoseri2481]

だとしても、自然相手のスポーツであるからこそ、自然な状態を人間が無理やり変えるのはいかがなものかと思うけどね。

[@master1387]

+sina sayyah it overflows anyway if no one touches it

[@Vnlimited]

This is a river that dries up over summer that normally leads into the sea, every year the water flows back builds up and begins to flow back into the sea. These guys came along and basically started the river going early by digging a trench for it to flow down, since its such a big river it has a lot of water behind it and was able to create a fast flowing wave stream for them to surf. This is a natural occurrence, not damaging any natural space or wildlife that lives in and around the water.

[@FenixL-CEO]

@santubaba yeah is a river i had been there, the natural river mouth is near that place, is one of the longest rivers on hawai so they just make another river mouth. That place look diferent now since the river slowly devour the beach untill some point

[@tallesmacedo]

Uohhhh Isso ai Ader Browwww, você não é nem o Pink nem o Cerebro, mas esta conquistando o mundo!!!

[@bytheSEAsoaps]

Great video! So I've seen this type of river drain into the ocean in Yelapa Mexico south of Puerto Vallarta.

[@monkeyman582]

There is a river that dries up over summer that normally leads into the sea, every year the water flows back builds up and begins to flow back into the sea. These guys came along and basically started the river going early by digging a trench for it to flow down. The locals and people with knowledge turned up and said this is a natural occurrence and they weren't damaging any natural space or wildlife that lives in and around the water.

[@mathewporter09]

This is cool. What what a sweet ride.

[@Mrchrispno1]

there used to be old cars and stuff under the water, left from the tidal wave that hit it in the 60s used to scare me (I was 7-8)John a pure Hawaiian let us live in one of his little houses there for fixing the roof, and my sister and I supported the family with all the fish they gave us for helping with the hukilow what we didnt eat, we gave to the store in exchange for credit. What a life! it was about 50 feet or so across that sand bar.

[@carl1237]

From what I remember when I saw this video 2 years ago was that there is a river that dries up over summer that normally leads into the sea, every year the water flows back builds up and begins to flow back into the sea. These guys came along and basically started the river going early by digging a trench for it to flow down, since its such a big river it has a lot of water behind it and was able to create a fast flowing wave stream for them to surf.

[@Rustica98]

this is pretty impressive accounting they just started to do it with their hands at first XD this is awesome :D

[@S30Uploads]

lyptosomethingor other, you know you have it when your fingernails fall off - ENDLESS SUMMER II changed my life, I've been surfing for the past 19 years with my Robert August Wingnut model. First time id seen Waimea was in endless summer II =)

[@rAvensBBr]

@ 2:45 crazy big ramp to be had off to his left. nice vid, looks like fun

[@knightdrako]

Not sure how far the river is to the ocean but perhaps on high tide the ocean will connect with the river?

[@FourLetterGT]

So if i'm not mistaken they just get the flow started and it widens over time? Crazy how big it gets!

[@brodygoodman298]

@tv waves do you have to make rollers so the water flows like that

[@cameronsmith8696]

That is honestly the coolest thing i have ever seen.

[@geminikutie6141987]

Apparently they are hooking up a river into the sea. The river is over flowing so they are releasing the water before it does any damage. These guys are just basically connecting the river that is meant to flow into the sea, but it dries up too much during the summer to remake the connection. It's just built up flood water that needs to go somewhere. So this isn't damaging anything, it's helping.

[@sowhatidontgiveafukk]

this is amazing, i'd hope to one day come to waimea bay just to grab an innertube and float around for a minute then to ride into the sea! only a short way haha.

[@alanshteynberg8313]

So the gap keeps naturally expanding; does it stop at some point or will it just keep going until it there is no more water pressure?

[@Ralyth]

I've live in Hawaii, and they do that periodically every few months or years. That is also only a small part of the beach. Waimea is pretty big, and there is plenty of room since most of tourist are at Waikiki.

[@element509]

How would you get on the wave in the first place? Do you get on paddle and try to stand? Or would you just try to just on your board and hope you dont fall? (I dont know I never seen one of these)

[@Donhilskier6]

Very cool. I just think the beginning of the video may be a little misleading when they are digging with their hands. Look at the height of the walls of that estuary towards the end. 6-10 feet? Somebody who likes to surf also has access to a bobcat or other heavy machinery....

[@matestandard]

Donhilskier6 Erosion.

[@Huntyodiggidy]

This is one of the coolest things i've ever seen.

[@laxfan727]

thats awesome but questions. 1 how long did that take damn 2 was the river like flooded and you like made a path for the extra water to drain? or is the river literally that close to the ocean?

[@1Itry]

This video always puts me in a good mood.

[@BluplanetFriends]

Okay, I read +Keyshell's post below. I am wondering though. If there is annual flooding and these folks do this event annually, have they considered building something that would do the same thing without beach erosion? Perhaps a miniature lock system that could be opened to divert the river water into a permanent or semi-permanent channel for the purpose of wave riding?

[@jamesdoe5824]

People are arguing that this is bad for the environment haha. And building a lock system isn't? This phenomenon has been happening since before people populated Hawaii.

[@MyLifeRSC]

It's sick and everything but could you ever get the beach back to normal after that?

[@iwannagosurfing139]

this makes me want to move to Hawaii because of this fun stuff. haha one love!

[@jgizzy]

I hear this river system in the video is very unique and that it does in fact revert back every year.

[@chris7jakarta]

just out of interest, do they fix the beach after the 'periodic flooding'? or how does all the sand go back in place for the next periodic flooding? that's a lot of sand that washes away!

[@NyanCatMatt]

I've always wanted to do something like this as a kid. Lucky them.

[@rogin_games]

mto foda esse video.. trilhazinha do bBlack Seeds.. bela edição mete um adwards e um adsense que da grana!

[@hrvoje6041]

this is really nice tutorial for making waves! Now all I need is a sand beach, and a river rly close to it, but that should be a minor problem!

[@susanneplays1545]

+Hrvoje Čanić DOnt do this at home

[@gavstow]

Partially correct... the beach actually reverted back to how it was before they started - and in a few days. If you live in a coastal area like we do - you will know that nature will always reclaim what man has made/ done. In storms, carparks and recreational areas return to being sand dunes, These guys did nothing wrong. You want to see destroyed beaches? Just look at any area that has piers, beachfront properties and coastal walkways. Coastal storm damage is just nature claiming them back.

[@whatupwood]

I Loved how you all worked as a team to make the "wave pool" it was natural and the earth will reclaim its land, so don't listen to the greensquid's out there, they are taking down tree's and putting up water park's, I agree with lakisofolimpia FRICKING GENIUS MAN!!!! :)

[@rickydembrun]

is that fresh water from rain, or salt water from the ocean thaat got deposited after a storm or something

[@happymeh123]

Every year due to the winter swells the sand builds up. You should youtube some of the surf here. This happens every year and people dig a trench every year and re-release the river.

[@WangYuhong-bg8wz]

一群男子在夏威夷歐胡島一處著名的沙灘上用手挖了一道溝，之後發生的事情帥呆了！這些人太會玩了吧！ 這群衝浪客利用Waimea河靠近Waimea灣的地理分佈，在雨季時，很容易就挖出一道溝，使得高漲的河水沿溝分流，形成一條非常適合衝浪的小溪。這條小溪的水流速度不快也不慢，而且非常淺，最適合在海上風浪太大時衝浪啦！ 怎麼樣，是不是很有創意！ - See more at:

[@jgizzy]

It will keep expanding width and depth until the water pressure goes down enough that further sand/soil erosion will cease to noticeably propagate further. The cool waves will go away then and you'll have a wide stream and a beach front that is divided. Fun for a day or two, but afterwards you realize the damage to the beachfront will end up outweighing any fun that was had for that day or two.

[@kingdre202]

during the months the riveris naturally dam wouldn't there be fishes breeding their until the reason weason starts?

[@eightonefour1]

its a small stream that gets block up by sand from wave action every winter . every year a group will dig it out and have some fun before the stream returns to its normal flow until winter

[@nickmartone2350]

Is this good drinking water there wasting or just excess ocean water that got stuck??

[@patch9894]

incredible... how long did it take to dig it?

[@omfgsomental]

The mass scale of freshwater being released to the salt water is a big difference. Its literally water for miles. The only place that may be affected is the initial shallow area where the water mixes. The reefs are farther past that, the salt to fresh water should come to an equilibrium before then.

[@Atzuke]

eso no daña el rio, al crear una desembocadura artificial?, que pasa con sus peces, que pasa con lo que faltaba en recorrido del rio? :/

[@EnriqueBF96]

Al parecer en crecida el río rompe por allí, ellos hacen el surco para poder hacerlo más dirigido y coger la "ola" que se forma

[@Atzuke]

jmmm ok, gracias por responder >:)

[@tyboy8089]

Is this still there today????

[@Zalfazar]

How long did it take to dig the initial trench?

[@matheusfelipe3109]

sera que existe alguma praia no brasil possivel pra fazer isso ?