Big Redwoods in the forest

Tallest & Largest Redwoods. Measuring

Continued from: Coast Redwoods

This page has relatively recent measurements, and links to sites that update even more frequently. The value in presenting slightly older heights or diameters adds in regards to comparison: one year to another. For those who are interested, it can show how much or little some redwoods changed over time.

Circle Solver - Standard Units

Area
Diameter
Circumference

From this page, you can download an October 2008 tallest redwoods update compiled by Michael Taylor. With some older data supplied farther down this page you can see how a few redwoods changed over time.

The measurements represent years invested by explorers like Atkins and Taylor, and researchers like Professor Sillett. Michael Taylor is shown below doing a preliminary measurement near Lost Man Creek, November 2008. Atkins and Sillett are in a photo near page end, preparing for a laser measurement. Few people know the redwood forest like these folks.

Michael Taylor and Gymnosperm Database will include and update measurements often.

The circle dimension calculator to the right side is provided for anyone who wants to quickly convert diameter to circumference or vice versa. I use this tool often. And for a quick conversion between feet and meters, try the conversion tool below.

Convert Feet & Meters: Type Number in Box

2008 Tallest Redwoods List

Tallest Trees List / October 2008 Update / MS Word .doc Download
2008 download is a rather extensive list

2011

michael taylor measuring redwood with laser rangefinder

Next, a few names of tallest redwoods 2011 in meters. Source was Gymnosperm Database:

Name, park, height in meters
Hyperion - Redwood 115.61
Helios - Redwood 114.58
Icarus - Redwood 113.14
Stratosphere Giant - Humboldt 113.05
National Geographic - Redwood 112.71
Orion - Redwood 112.63
Federation Giant Humboldt 112.62
Paradox - - Humboldt 112.51
Mendocino - Montgomery 112.32
Mellenium - Humboldt 111.92
Apex - Humboldt 111.83
Pipe Dream - Humboldt 111.71
Harry Cole - Humboldt 111.65
Rockefeller - Humbolt 111.59
Minaret - Humboldt 111.56
Alice Rhodes - Humboldt 111.53
Mother & Daughter - Humboldt 111.50
Lone Fern - Humboldt 111.47

Pre-dating 2000

Below, are redwood sizes pre-dating 2000: another snap shot in time. Abbreviations are parks: PCRST Prairie Creek Redwoods State Park, JSRSP Jedediah Smith Redwoods State Park, RNP Redwood National Park, H Humboldt or M Montgomery.

The table will provide the height, the diameter at breast height / DBH, and the volume of the trunk and main stems in cubic feet. These trees have been discovered and measured by several people. Chris Atkins and Michael Taylor found the bulk of the tallest redwoods. Data below was the result of work by Chris Atkins, Michael Taylor, Robert Van Pelt, Steve Sillett and Ron Hildebrant.



         
Name ~ These are the Large Ones Park Height DBH Cubic Feet
Del Norte Titan JSSP 307' feet 23.7' feet 36,893
Iluvatar PCRSP 300' 20.5' 36,473
Lost Monarch JSSP 320' 26.0' 34,914
Weyand Tr JSSP 330' 19.1' 33,581
Sir Isaac Newton - previous Nat. Champ PCRSP 299' 22.5' 33,192
El Viejo del Norte JSSP 330' 23.0' 32,644
Terex Titan PCRSP 270' 23,.0' 32,384
Adventure Tr PCRSP 341' 16.5' 32,140
Bull Creek Giant HRSP 337' 21.0' 31,144
Arco Giant RNP 262' 22.5' 30,699
Drury Tr PCRSP 275' 19.2' 29,774
Westridge Giant PCRSP 244' 23.0' 29,541
Big Tr PCRSP 286' 23.7' 28,619
Giant Tr HRSP 355' 16.5' 27,800
Browns Creek Tr PCRSP 255' 21.0' 27,515
Elk Tr PCRSP 313' 19.3' 27,944
Atlas Tr PCRSP 288' 21.0' 26,938
Foothill Tr PCRSP 301' 19.0' 26,500
Redwood Creek Giant RNP 360' 17.1' 26,193
Godwood Creek Giant PCRSP
354'
24.5'
25,636
Ravine Giant PCRSP 264' 20.2' 25,621
Stratosphere Giant HRSP 369' 17.4' 22,900
Prometheus PCRSP 320' 18.9' 23,530
Pumpkin Tr HRSP 315' 19.1' 23,520
Bell PCRSP 314' 19.7' 22,750
Pleiades II PCRSP 297' 17.3' 21,950
Stout Tr JSSP 325' 16.7' 21,966
Zeus PCRSP 331' 17.0' 21,726
Fessler Tr JSSP 215' 19.0' 21,470
Epimetheus PCRSP 296' 16.7' 21,387
Brocolli Tr PCRSP 267' 19.2' 21,177
Childrens Forest Giant HRSP 316' 16.6' 20,976
Flaking Bark Tr PCRSP 320' 16.9' 20,915
         
Name ~ These are the Tall Ones Park Height Diameter  
Stratosphere Giant Humboldt 368.6 17.00  
Mendocino Montgomery 367.5 10.10  
Paradox Humboldt 367.1 12.80  
National Geographic Redwood 366.7 14.40  
Federation Giant Humboldt 366.6 14.90  
Harry Cole Redwood 366.3 16.20  
Pipe Dream Humboldt 364.6 14.00  
Millennium Humboldt 363.8 8.90  
Lone Fern Humboldt 363.7 8.40  
Swamp Montgomery 363.3 11.20  
Rockefeller Humboldt 363.2 15.20  
Alice Rhodes Humboldt 363.1 11.00  
Libbey (A.K.A Tall Tree) Redwood 362.9 9.50  
John Muir Humboldt 362.6 13.80  
Teepee Bell Montgomery 362.6 13.40  
Twin Tower Redwood 362.6 12.40  
Harper  Tower Humboldt 362.5 11.10  
South Fork Humboldt 362.3 13.20  
Randy Stoltman Humboldt 362.3 10.80  
Lost Hope Humboldt 362.2 16.50  
Crown Jewel Redwood 361.7 11.10  
Pyramid Giant Humboldt 360.8 16.20  
Mother & Daughter Humboldt 360.8 11.80  
Redwood Creek Giant Redwood 360.2 17.20  
Montomery Giant Montgomery 360.1 17.30  
Pinnacle Humboldt 360.1 10.00  
Harriett Weaver Humboldt 360.0 13.50  
Rocket Top Humboldt 359.5 10.70  
Springing Buck Humboldt 359.3 15.70  
Canoe Creek Humboldt 359.1 10.80  
Creaking Bear Humboldt 358.8 14.80  
New Hope Jedediah 358.7 15.90  
Tranquility Humboldt 358.6 13.60  
Honeycomb Humboldt 358.2 9.50  
Dome Top Humboldt 358.0 12.80  
Mesa Humboldt 357.8 13.20  
Valentine Humboldt 357.8 11.40  
Rockview Humboldt 357.7 12.60  
Symetrical Spiral Humboldt 357.6 14.70  
Washout Humboldt 357.4 13.50  
Stardusk Humboldt 357.1 10.80  
Mattole Beast Humboldt 357.0 12.30  
Graywacke Humboldt 356.8 12.70  
Gray Poison Humboldt 356.7 14.70  
Alan Mitchell Humboldt 356.6 9.40  
High Spire Humboldt 356.2 12.50  
Jordan Cenennial Humboldt 356.0 14.60  
Scar  Base Humboldt 355.9 10.10  
Floodline Humboldt 355.9 13.20  
Giant Humboldt 355.4 16.90  
Rosebark Humboldt 355.4 12.60  
Rifle Humboldt 355.4 11.10  
Quadraspire Montgomery 355.2 11.30  
Mill Creek Humboldt 355.0 13.40  
Wishbone Montgomery 354.9 11.10  
Pig Snout Humboldt 354.8 12.80  
Northstar Humboldt 354.8 9.80  
Phoenix Humboldt 354.5 13.50  
Cinnamon Bark Humboldt 354.5 11.20  
Navigation Humboldt 354.3 12.80  
Satellite Montgomery 354.3 10.80  
Parallel Pillars Humboldt 354.2 11.90  
Godwood Creek Giant Prairie 354.1 24.50  
AC Carder Humboldt 354.0 13.80  
Huckleberry Humboldt 354.0 11.00  
Big Log Humboldt 353.9 15.50  
Chestnut Humboldt 353.9 13.80  
Alluvium Humboldt 353.9 11.70  
Cornstalk Humboldt 353.5 9.50  
hamrock Humboldt 353.4 10.70  
Sarah Humboldt 353.2 11.90  
William Harlow 353.0 10.90  
Riverside Humboldt 353.0 9.70  
Logjam Humboldt 352.9 9.50  
Imperial Montgomery 352.8 12.00  
Matterhorn Giant Humboldt 352.7 16.40  
Remnant Humboldt 352.7 13.80  
Obelisk Humboldt 352.7 10.90  
Yellow Vine Humboldt 352.6 14.60  
Luke's Lookout Humboldt 352.6 11.50  
Graben Tr Humboldt 352.6 9.10  
Zephyr Grizzly 352.5 12.00  
Radford Stovepipe Humboldt 352.5 10.30  
Riverfront Humboldt 352.4 11.70  
Warm Winds Humboldt 352.3 11.60  
Creekside Cavern Montgomery 352.3 12.10  
Tempest Montgomery 352.2 9.50  
Wounded Knee Humboldt 351.9 10.40  
Space Needle Humboldt 351.8 8.80  
Bumble Bee Humboldt 351.8 10.20  
Emerald Giant Redwood 351.5 15.50  
Barricade Humboldt 351.5 13.50  
Bushy Toe Humboldt 351.4 17.20  
Arrowhead Humboldt 351.4 13.20  
Quintuple Tower Redwood 351.4 10.80  
Cone Top Humboldt 351.3 12.50  
Thimble Humboldt 351.3 9.70  
Calf Creek Humboldt 351.2 13.80  
GPS Humboldt 351.2 9.70  
Bomber Humboldt 351.1 11.40  
Roadside Pitchfork Humboldt 351.0 11.90  
Odyssey Humboldt 350.7 16.50  
Thor Spire Humboldt 350.6 11.00  
Greyhound Montgomery 350.6 8.80  
Boundary Humboldt 350.4 12.40  
Javelin Humboldt 350.3 11.70  
Cottage Humboldt 350.2 12.90  
Mosque Humboldt 350.2 12.50  
Deadwood Giant Redwood 350.1 18.40  
Canfield Humboldt 350.1 11.70  
Meanderfall Humboldt 350.0 11.70  
Elk Creek Humboldt 349.9 11.10  
Expansion Humboldt 349.9 10.70  
Palisade Montgomery 349.9 10.10  
Bamboozle Humboldt 349.9 11.70  
Tom McDonald Redwood 349.8 12.80  
Recipe Redwood 349.8 11.60  
Jeanie Taller Humboldt 349.7 14.60  
Long Arm Humboldt 349.7 10.10  
Cobblestone Humboldt 349.6 8.20  
Laura Mahan Humboldt 349.0 13.10  
Fusion Giant Redwood
348.6
22.40
 
Moundsprout Humboldt 348.5 11.00  
William Kent Humboldt 348.5 14.40  
False Giant Humboldt 348.5 16.30  
Seaserpent Humboldt 348.3 9.60  
Disco Humboldt 348.3 11.00  
North Pillar Humboldt 348.2 10.60  
Trifecta Humboldt 348.1 8.50  
Founders Humboldt 348.0 13.20  
Wounded Knight Humboldt 347.9 15.60  
Scarecrow Humboldt 347.9 15.30  
West Slope Redwood 347.5 12.50  
Ivory Montgomery 347.5 11.90  
Forty Four Redwood 347.5 12.00  
Crescent Moon Montgomery 347.4 9.60  
Puppy Burl Montgomery 347.4 11.10  
Hair's Width Humboldt 347.3 11.00  
Two-Headed Humboldt 347.1 12.40  
Thunderbolt Humboldt 347.1 17.20  
North Face Prairie 347.0 9.00  
Channel Humboldt 347.0 N/A  
Equinox Humboldt 346.7 9.70  
Polysprout Hendy 346.7 10.80  
Foggy Burl Redwood 346.4 13.50  
Creekview Humboldt 346.4 14.10  
Table Top Humboldt 346.3 13.70  
Peripheral Humboldt 346.2 13.70  
Dark Forest Redwood 346.1 10.90  
Calf Creek Spire Humboldt 346.0 14.00  
Big Burl Humboldt 345.9 12.70  
U.S 101 Humboldt 345.3 13.80  
Teetering Cavern Humboldt 345.1 14.40  
Wind Shear Humboldt 345.0 13.50  
Gemini Prairie 345.0 N/A  
Fat Boy Humboldt 345.0 13.50  
Hill Davis (6th Tallest) Redwood 344.6 15.70  
Black Leopard Humboldt 344.6 12.10  
Saturn Humboldt 344.3 10.20  
Graveyard Humboldt 344.2 13.90  
Cattleguard Humboldt 344.2 11.50  
Hammond Humboldt 344.0 11.00  
Foot Humboldt 344.0 N/A  
Steep Hill Redwood 344.0 16.40  
Woodpecker Humboldt 343.5 11.50  
New World Humboldt 343.2 14.90  
Soletude Redwood 343.1 12.60  
Skyscraper Humboldt 343.0 13.50  
Toxic Giant Humboldt 343.0 16.00  
Telephone Humboldt 343.0 15.50  
Sunglow Humboldt 342.7 13.10  
Flanker Montgomery 342.5 8.80  
Jedediah Smith Jedediah 342.0 13.30  
Bear Creek Humboldt 342.0 14.00  
Steeple Montgomery 342.0 8.90  
Junior Humboldt 341.8 10.30  
Eclipsed Montgomery 341.7 7.00  
Fallen Commerades Humboldt 341.6 N/A  
Cheatham Giant Grizzly 341.5 16.50  
Loop Humboldt 341.1 10.40  
Dimond Humboldt 341.0 13.00  
Turkey Vulture Hendy 340.8 9.00  
Van Duzen Grizzly 340.5 10.00  
Backloop Hendy 340.1 10.60  
Newt Montgomery 340.1 12.50  
Devil's Tower Redwood 340.0 9.00  
Redway Humboldt 340.0 10.00  



Measuring redwood trunks

A few common measurements for redwoods are diameter, height and trunk volume. This section is mainly about measuring diameter of huge redwood trees. Basically, redwood diameter is measured at DBH or diameter breast high: 4 feet & 6 inches above soil grade.

Steve Sillett and Chris Atkins with a tripod in Redwood National Park

Image to the right: Chris Atkins and Professor Steve Sillett setting a tripod to measure redwood height with a laser rangefinder in Redwood National Park. Equipment like this allows researchers to measure several redwoods per day.

The way redwoods are measured for research can differ from how trees are measured for nomination as national champions. American Forest champions are based on points for height, girth and canopy width added together. Scientists studying redwoods may want to know more, like how many cubic feet of wood the trunk and stems have: the real measure of how big it is.

If a redwood is on a slope, take the elevation where the trunk enters the soil on the downhill side of the redwood and average that with the elevation where the trunk enters the soil on the uphill side. If the grade is level, then its easier yet. Estimate the mid-point of the trunk between the hight and low sides, then go up the trunk 4 feet and 6" and measure diameter there, extending a tape horizontally around the bole. Include indented areas of the trunk. In other words, don't press the tape inward against the bark at every recessed spot.

In part, diameter is partly opinon because a decision has to be made about where soil grade is. Twigs and leaves do not count as soil.

Some experts who are adept with instuments can measure irregular trunk bases rather meticulously to determine wood volume and shape, sometimes referred to as the footprint on the forest floor.

Because some trunks are eliptical, measure the full circumference and do the math. Stick with the average. Example for redwood with 70' circumference: is 70' / π, or 70' divided by 3.14. The answer is 22.29' diameter.

Many giant redwoods have lower trunks like volcanoes. It helps to stand back from the redwoods and take a look from a distance. Stand 20 or 30 feet away and look around for the average soil level.

Diameter measuring can be more complicated, but those basics are adquate for most people. If a redwood or conifer trunk branches-out up into multiple stems below the DBH height, then only the largest stem may be measured. That is how the champion point system works. And that can be a failure to judge on the true size. That's one rule of one system. If there is a burl, some experts move the tape above it.

Beginners ... use the KISS principle. Estimate 4.5' above the average soil grade, measure circumference, and divide by 3.14. For convenience, use the automatic conversion table on this page to convert diameter, circumference and area. Fill out one field, and the others should be generated for you. Enter numbers whole or as decimals like 5.6 if you wish

For height, read the following:

http://www.americanforests.org/resources/bigtrees/measure.php