_Corrected by observations made during season 1910.
From Haynes' Official Guide--Yellowstone National Park_
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NAME HEIGHT DURATION INTERVALS OF ERUPTIONS
FEET
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UPPER BASIN
Artemesia 50 10 minutes 12 to 24 hours
Bee-Hive 200 8 minutes 12 hours to 40 days
Castle 75 30 minutes 26 hours (freq. misses)
Cliff 100 8 minutes 4 to 8 hours
Comet 60 1 minute Irregular
Cub (Big) 30 10 minutes With Lioness Geyser
Cub (Little) 10 3 minutes With Lion Geyser
Daisy 75 2 minutes 45 to 60 minutes
Economic 20 10 seconds Follows Grand and plays
every 5 min. for 2 days
Fan 60 10 minutes 4 to 6 hours
Giant 250 90 minutes 7 to 12 days
Giantess 150 12-24 hours 16 to 25 days
Grand 200 40-80 minutes 2 to 20 days
Grotto 30 30 minutes 2 to 5 hours
Jewel 40 1 minute 5 minutes
Lion 60 8 minutes 6 to 12 hours
Lioness 100 10 minutes 15 to 20 days
Lone Star 75 10 minutes 1 to 2 hours
Mortar 30 5 minutes 2 hours
Oblong 35 5 minutes 7 to 8 hours
Old Faithful 150 4 minutes 65 to 75 minutes
Riverside 100 15 minutes 7 hours
Saw-Mill 35 2 hours 2 to 3 hours
Spasmodic 4 2 minutes 2 to 3 hours
Splendid 200 ---------- Ceased to play about 1892
Surprise 100 2 minutes Irregular
Turban 40 20 minutes With Grand Geyser
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LOWER BASIN
Fountain 75 20 minutes 3 to 6 hours
Great Fountain 100 30 minutes 8 to 12 hours
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MIDWAY BASIN
Excelsior 300 Variable 1 to 4 hours, ceased in 1888
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NORRIS BASIN
Constant 20 10 seconds 30 seconds
Fearless 25 15 minutes 3 hours
Minute Man 15 1-3 minutes 1 to 3 minutes
Monarch 100 6 minutes 6 hours
Mud 20-60 1-2 minutes New, irregular
New Crater 20 1 minute 3 minutes
Valentine 100 40 minutes 7-1/2 hours
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