Undertow Spillway
| Added in | Drizzle Season 2022 (1.1.0) |
| Total area | 2,527p |
| Features | Inkrails(RM),Sponges |
| Hazards | Abyss |
- For the song performed by Wet Floor, seeUndertow.
Undertow Spillway is a multiplayerstage inSplatoon 3. It is also one of the stages that can haveTricolor Turf Wars.
Layout

Undertow Spillway is an abandoned underground flood bypass inSplatsville that was renovated into aTurf War stage. The spawn area features a wide area of turf that goes far to the right. The first drop is accessible to the other team via an uninkable ramp and goes also as far as the spawn area. The drop after that is an open area and to the left allows access to a raised area and an uninkable raised area. To the right of the open area is a small drop to another open area. The middle is two open areas separated by a wall in the middle.
Ranked Battle terrain
InRanked Battles, specifications for the terrain or placement of objects are different between themodes; these changes create new paths or new objects to take cover behind.
Splat Zones
There are two Splat Zones, both located underneath the glass areas. An uninkable ramp is added to allow access to the opposing team's base.
Tower Control
The Tower starts in the middle of the stage, replacing thebumper normally there. When advancing, the Tower goes left then straight, closer to the opposing team's side. It then goes right and continues going until it reaches the goal. The large glass areas in the middle are removed and a ramp is added in the middle of the opposing team's base.
| InSplatoon 3, checkpoints have been added: | |||||
|---|---|---|---|---|---|
| Checkpoint | Location | Timer (Seconds) | Progress amount | ||
| Before | After | Total | |||
| 1 | The first checkpoint is just before it turns left, right next to the starting position. | 5 | 96 | 86 | 10 |
| 2 | The second checkpoint is in the middle of the upper left area. | 6 | 59 | 47 | 12 |
| 3 | The third checkpoint is located in the upper middle area. | 6 | 24 | 12 | 12 |
Rainmaker
TheRainmaker is located in the middle of the stage, replacing the bumper normally there. The checkpoints are located in the open area to the right, and to the far left on the opponent's raised area. A ramp is added to the far left to allow access to the checkpoint. The pedestal is located on the first drop. The right of the spawn areas has been altered slightly, having an uninkable path being the only way to get to the pedestal. An Inkrail is added to the far right of the spawn.
Clam Blitz
The Clam basket is located to the left of the spawn, two drops down. An uninkable ramp has been added just behind the basket to help access the platform behind it.
Splatoon 3
Version 1.0.0 to 7.1.0
Undertow Spillway was released with the launch ofSplatoon 3.
Version 7.2.0 onwards

| “ | An important message from the Undertow Spillway maintenance team: "Undertow Spillway will be closed from 4/15 at 5pm to 4/17 at 7pm for inspections and expansion work. For safety reasons, access will be closed during this period so we appreciate your patience." | ” |
Undertow Spillway underwent a major renovation inversion 7.2.0.
Changes include:
- A small amount of the left spawn area has been extended.
- A ramp was added in the perch area. The sponge and the cover to the right of that area has been extended upward.
- An uninkable glass has been added below the ledge of the right drop area.
- Few railings has been added near the snipe area.
- A tunnel was added below of the snipe area.
- A chunk of the central wall that divides the center has been removed.
Splatfests
Undertow Spillway was available in the followingSplatfests as aTricolor Turf War stage inSplatoon 3:
- Spicy vs. Sweet vs. Sour
- Shiver vs. Frye vs. Big Man
- Past vs. Present vs. Future
- Zombie vs. Skeleton vs. Ghost (2025)
Big Run
Undertow Spillway is where the thirdBig Run took place. Its layout adds many inkable blocks, plus tengushers which theSalmonids use to enter the stage. Six Gushers are active at low tide, three at medium tide, and two at high tide. As usual, there are three tides; low tide takes place in the middle of the stage with the Egg Basket placed on the sloped ledge in the center, medium tide sets players on the raised area just outside of Team Alpha's spawn, and high tide sets players in the spawn area with the majority of the stage flooded. For this Big Run only, the Egg Basket's hitbox is expanded downward due to its placement on raised platforms across all tides. The onlyKnown Occurrences that can occur on this stage areFog,The Mothership, andRush.
Version history
| Version | Adjustments |
|---|---|
| 1.2.0 |
|
| 2.0.0 |
|
| 2.1.0 |
|
| 3.0.0 | |
| 4.0.0 |
|
| 7.2.0 |
|
Maps
1.1.0 -1.2.1
Turf War
Splat Zones
Tower Control
Rainmaker
Clam Blitz
2.0.0 -7.1.0
Turf War
Splat Zones
Tower Control
Rainmaker
Clam Blitz
Tricolor Turf War
7.2.0
Turf War
Splat Zones
Tower Control
Rainmaker
Clam Blitz
Gallery
TwoAutobombs in Undertow Spillway.
AnAngle Shooter reflecting on a glass panel.
The map in Tricolor Turf War from above.
Undertow Spillway during a Big Run.
- Load videoLocal FileLocal File might collect personal data.
Promotional Video (link to file)
Quotes
| “ | Undertow Spillway is a former flood bypass located deep underSplatsville. Abandoned for years, it surged in popularity after it was renovated into a stage forTurf War battles! | ” |
— @NintendoEurope on Twitter[1] | ||
| “ | Squid Research Lab reporting fromUndertow Spillway, a former flood bypass that's now used for Turf War battles! This abandoned facility is another shining example of upcycling, as the varied terrain lends itself to strategic and hard-fought skirmishes amongSplatsville locals. | ” |
— @SplatoonNA on Twitter[2] | ||
Quotes
| View the quotation page. |
Trivia
- This is the first stage to have different names between both Spanish localizations. Both French localizations have used different names for certain stages since the launch ofSplatoon, while both English localizations ofSplatoon used the same stage names before all regions started using one localization fromSplatoon 2 onward.
- The stage was the first stage introduced inSplatoon 3 to be used inTricolor Turf War.
- It is also the first stage to be used in both Tricolor Turf War andBig Run.
- This stage strongly resembles Tokyo'sMetropolitan Area Outer Underground Discharge Channel, the main chamber of which is often referred to as an "underground temple" or "floodwater cathedral", hence the internal stage name of "Temple".
- During Big Run, as the players get launched onto the stage, an alarm-like sound can be heard.
- Additionally, theGrizzco helicopter stays immobile the entire time, unlike in other stages.
- This was the first Big Run stage to take place indoors. It is also the only Salmon Run stage in anySplatoon game where the time of day does not change to night during aKnown Occurrence; instead, the lights on the ceiling dim.
Names in other languages
| Language | Name | Meaning |
|---|---|---|
| マテガイ放水路 mategai hōsuiro | Mategai Flood Bypass[note 1] | |
| Baarsreservoir | Perch reservoir | |
| Réservoir Rigadelle | Common Cockle Reservoir | |
| Schwertmuschel-Reservoir | Razor Clam Reservoir | |
| Cisterna Cernia | Grouper Cistern | |
| Приливослив Prilivosliv | High tide sink | |
| Desagüe Navajuela | Navajuela Drain[note 2] | |
| Cisterna Navajuela | Navajuela Cistern | |
| 竹蛏疏洪道 zhúchēng shūhóngdào (Mandarin) | Razor Clam Floodway | |
| 竹蟶疏洪道 zhúchēng shūhóngdào (Mandarin) | Razor Clam Floodway | |
| 맛조개 방수로 matjogae bangsuro | Mategai Flood Bypass | |
| Undertow Spillway | Undertow Spillway | |
| Temple[3] |
Translation notes
- ↑Mategai refers toGould's razor shell (Solen strictus), a type of mollusk found in Japan that is sometimes used as a dish ingredient.
- ↑Navajuela refers toEnsis macha, a type of mollusk found in Peru, Chile, and Argentina.


