Guadalupe River topographic map

The Mount St. Helens major eruption of May 18, 1980 remains the deadliest and most economically destructive volcanic event in U.S. history. Fifty-seven people were killed; 200 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. A massive debris avalanche,…

Average elevation: 2,096 m

Average elevation: 218 m

Average elevation: 483 m

The Appalachian Mountains (French: Appalaches), often called the Appalachians, are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They once reached elevations similar to those of the Alps and the Rocky…

Average elevation: 1,463 m

Mount Washington, also known as Agiocochook, is an ultra-prominent mountain in the state of New Hampshire. It is the highest peak in the Northeastern United States at 6,288.2 ft (1,916.6 m) and the most topographically prominent mountain east of the Mississippi River.

Average elevation: 1,568 m

Average elevation: 159 m

Sierra Blanca is found in Far West Texas, a subdivision of West Texas, and is 4,520 feet (1,380 m) above sea level. The town is part of the Trans-Pecos region within the most mountainous and arid portion of Texas. The town is located in Hudspeth County, which is large and sparsely populated. Sierra Blanca…

Average elevation: 1,391 m

Average elevation: 3,888 m

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Average elevation: 285 m

Baltimore is in north-central Maryland on the Patapsco River close to where it empties into the Chesapeake Bay. The city is also located on the fall line between the Piedmont Plateau and the Atlantic coastal plain, which divides Baltimore into "lower city" and "upper city". The city's elevation ranges from sea…

Average elevation: 65 m

Average elevation: 2,440 m

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Average elevation: 180 m

The city is in the Salt River Valley, or the "Valley of the Sun," in the northern reaches of the Sonoran Desert. Scottsdale, 31 mi (50 km) long and 11.4 mi (18.3 km) wide at its widest point, shares boundaries with many other municipalities and entities. On the west, Scottsdale is bordered by Phoenix, Paradise…

Average elevation: 414 m

Average elevation: 4 m

Average elevation: 2,596 m

The San Francisco Bay Area is characterized by a diverse and dynamic topography shaped by geological processes over millions of years. This region features a combination of coastal plains, steep hills, and rugged mountains, all influenced by the tectonic activity associated with the nearby San Andreas Fault…

Average elevation: 113 m

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Average elevation: 87 m

Port Charlotte is characterized by a predominantly flat and low-lying terrain, typical of Florida’s coastal landscape. The area features a network of waterways, including the Peace River and Charlotte Harbor, which provide ample opportunities for recreational activities like boating and fishing. Elevations…

Average elevation: 4 m

Average elevation: 144 m

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Average elevation: 1 m

Agriculture and forestry are major industries. Agriculture includes dryland and irrigated farming and livestock grazing. Livestock are frequently moved between high-elevation summer pastures and low-elevation winter pastures, a practice known as transhumance.

Average elevation: 2,292 m

Soils on Pikes Peak above the timberline (approximately 12,000 ft or 3,700 m) are classified as Cirque land. Forests at lower altitudes mostly lie over the brown stony, sandy, loams of the Catamount loam or Ivywild loam series.

Average elevation: 3,902 m

Average elevation: 4 m

Average elevation: 100 m

Oakhurst is located on the Fresno River 3 miles (5 km) south-southwest of Yosemite Forks, at an elevation of 2,274 feet (693 m). Its coordinates are 37°19′41″N 119°38′58″W / 37.32806°N 119.64944°W / 37.32806; -119.64944. It is located at the junction of state highways 41 and 49, at the…

Average elevation: 837 m

Average elevation: 46 m

The topography of the sea floor surrounding Crescent City has the effect of focusing tsunamis. According to researchers at Humboldt State University and the University of Southern California, the city experienced tsunami conditions 31 times between the years 1933 and 2008. Although many of these incidents were…

Average elevation: 31 m

Average elevation: 8 m

According to the United States Census Bureau, the city has a total area of 497 square miles (1,290 km2), of which 249 square miles (640 km2) is land and 248 square miles (640 km2) (49.9%) is water. It is the largest city in Virginia by total area and third-largest city land area. The average elevation is 12…

Average elevation: 2 m

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Average elevation: 335 m

Average elevation: 109 m