Geyser calculator

Eruption windows, long-term supply and the storage that carries your colony through dormancy.

Geyser analysis

Geyser

Steam · 110 °C

Overpressure: 5 kg per tile

Initial values: midpoint geyser.

Eruption rate (kg/s)Erupts for (s)Every (s)Active for (cycles)Every (cycles)

Eruption interval

300 s erupting300 s idle

Activity period

75 cycles active50 cycles dormant

Average output

Long-term average

1.5

kg / s

Per colony cycle

900

While erupting

kg / s

During active period

2.5

kg / s

The long-term average includes pauses between eruptions and the full dormancy period. Overpressure can reduce the actual yield.

Dormancy reserve

Storage for dormant period

45,000

Reserve needed to supply the long-term average throughout dormancy. Allow extra storage for gaps between eruptions and maintain enough room at the vent to prevent overpressure.

Use this geyser in a colony plan

Compare geysers

Geyser	Element	Active-period yield	Long-term average	Temperature	Overpressure
Cool Steam Vent	Steam	1,000–2,000 kg/cycle	1.5 kg/s	110 °C	5 kg/tile
Steam Vent	Steam	500–1,000 kg/cycle	0.75 kg/s	500 °C	5 kg/tile
Water Geyser	Water	2,000–4,000 kg/cycle	3 kg/s	95 °C	500 kg/tile
Cool Slush Geyser	Polluted Water	1,000–2,000 kg/cycle	1.5 kg/s	-10 °C	500 kg/tile
Polluted Water Vent	Polluted Water	2,000–4,000 kg/cycle	3 kg/s	30 °C	500 kg/tile
Cool Salt Slush Geyser	Brine	1,000–2,000 kg/cycle	1.5 kg/s	-10 °C	500 kg/tile
Salt Water Geyser	Salt Water	2,000–4,000 kg/cycle	3 kg/s	95 °C	500 kg/tile
Minor Volcano	Magma	400–800 kg/cycle	0.6 kg/s	1726.8 °C	150 kg/tile
Volcano	Magma	800–1,600 kg/cycle	1.2 kg/s	1726.8 °C	150 kg/tile
Carbon Dioxide Geyser	Liquid Carbon Dioxide	100–200 kg/cycle	0.15 kg/s	-55.1 °C	50 kg/tile
Carbon Dioxide Vent	Carbon Dioxide	70–140 kg/cycle	0.105 kg/s	500 °C	5 kg/tile
Hydrogen Vent	Hydrogen Gas	70–140 kg/cycle	0.105 kg/s	500 °C	5 kg/tile
Hot Polluted Oxygen Vent	Polluted Oxygen	70–140 kg/cycle	0.105 kg/s	500 °C	5 kg/tile
Infectious Polluted Oxygen Vent	Polluted Oxygen	70–140 kg/cycle	0.105 kg/s	60 °C	5 kg/tile
Chlorine Gas Vent	Chlorine Gas	70–140 kg/cycle	0.105 kg/s	60 °C	5 kg/tile
Cool Chlorine Gas Vent	Chlorine Gas	70–140 kg/cycle	0.105 kg/s	5 °C	5 kg/tile
Natural Gas Geyser	Natural Gas	70–140 kg/cycle	0.105 kg/s	150 °C	5 kg/tile
Copper Volcano	Molten Copper	200–400 kg/cycle	0.3 kg/s	2226.8 °C	150 kg/tile
Iron Volcano	Molten Iron	200–400 kg/cycle	0.3 kg/s	2526.8 °C	150 kg/tile
Gold Volcano	Molten Gold	200–400 kg/cycle	0.3 kg/s	2626.8 °C	150 kg/tile
Aluminum Volcano	Molten Aluminum	200–400 kg/cycle	0.3 kg/s	1726.8 °C	150 kg/tile
Tungsten Volcano	Molten Tungsten	200–400 kg/cycle	0.3 kg/s	3726.8 °C	150 kg/tile
Niobium Volcano	Molten Niobium	800–1,600 kg/cycle	1.2 kg/s	3226.8 °C	150 kg/tile
Cobalt Volcano	Molten Cobalt	200–400 kg/cycle	0.3 kg/s	2226.8 °C	150 kg/tile
Leaky Oil Fissure	Crude Oil	1–250 kg/cycle	0.126 kg/s	326.9 °C	50 kg/tile
Liquid Sulfur Geyser	Liquid Sulfur	1,000–2,000 kg/cycle	1.5 kg/s	165.2 °C	500 kg/tile

Average values include dormancy at midpoint rolls. Active-period yield includes the pauses between eruptions.