McArthur–Burney Falls
Burney Falls is a waterfall on Burney Creek, in McArthur-Burney Falls Memorial State Park, Shasta County, California.
The water comes from underground springs above and at the falls, which are 129 feet high, and provides an almost constant flow rate of 379 million litres per day, even during the dry summer months.
The falls are an example of river drainage regulated by stratigraphically-controlled springs, and also of a waterfall formed by undercutting of horizontal strata.
The falls were called "the Eighth Wonder of the World" by President Theodore Roosevelt, and were declared a National Natural Landmark in December 1984.
Located approximately 6 miles north of Burney, California, McArthur–Burney Falls Memorial State Park is the second oldest state park in the California State Parks System.Burney FallsLenticular CloudsMccloud fallsMt. ShastaSundial Bridge
McCloud Falls
The McCloud River is a river that flows east of and parallel to the Sacramento River, 77.1 miles (124.1 km) long, in northern California in the United States. It drains a scenic mountainous area of the Cascade Range north of Redding and is a tributary of the Sacramento River.
The river was originally known as the "McLeod River", after the Hudson's Bay Company hunter and trapper Alexander Roderick McLeod who explored it during the winter of 1829-1830. By the 1860s, the spelling "McCloud" was widely used, likely because that was the conventional American spelling of the Scottish name, and perhaps in part to honor California pioneer Ross McCloud, who settled here in 1855.
It rises from several spring-fed streams in the Cascades approximately 10 miles (16 km) southeast of Mount Shasta in Siskiyou County. It flows initially west, passing south of Mt. Shasta and receiving streams that drain the southern slope of the peak. From Mt. Shasta it flows generally southwest through Lake McCloud and through the Shasta-Trinity National Forest. It joins Shasta Lake, formed by the Shasta Dam, approximately 15 miles (24 km) north of Redding, with the lower 10 miles (16 km) of the river forming the middle arm of the lake. The McCloud arm joins in at the Pit River Bridge on Interstate 5, 5 miles (8.0 km) north of the city of Shasta Lake.
The river is well known for a series of waterfalls which tumble over basaltic lava flows, known collectively as the Falls of the McCloud River.Burney FallsLenticular CloudsMccloud fallsMt. ShastaSundial Bridge
The Sundial Bridge (also known as the Sundial Bridge at Turtle Bay) is a cantilever spar cable-stayed bridge for bicycles and pedestrians that spans the Sacramento River in Redding, California, United States and forms a large sundial. It was designed by Santiago Calatrava and completed in 2004 at a cost of US$23,500,000. The bridge has become iconic for Redding.
The Sundial Bridge provides pedestrian access to the north and south areas of Turtle Bay Exploration Park, a complex containing environmental, art and history museums and the McConnell Arboretum and Gardens. It also forms the gateway to the Sacramento River Trail, a 35-mile-long trail completed in 2010 that extends along both sides of the river and connects the bridge to the Shasta Dam. Drift boats of fishermen are often seen passing beneath the bridge as they fish for salmon, steelhead and rainbow trout. In the distance, Mount Shasta is barely visible. Shasta Bally is visible to the West looking upstream the Sacramento.
he support tower of the bridge forms a single 217 foot (66 metre) mast that points due north at a cantilevered angle, allowing it to serve as the gnomon of a sundial; it has been billed as the world's largest sundial,although Taipei 101 and the associated sundial design of its adjoining park are much larger. The Sundial Bridge gnomon's shadow is cast upon a large dial to the north of the bridge, although the shadow cast by the tower is exactly accurate on only one day in a year – the summer solstice, June 20 or 21. The time is given as Pacific Daylight Time. The tip of the shadow moves at approximately one foot per minute so that the Earth's rotation about its axis can be seen with the naked eye.
The Sundial Bridge is a cantilever spar cable-stayed bridge, similar to Calatrava's earlier design of the Puente del Alamillo in Seville, Spain (1992). This type of bridge does not balance the forces by using a symmetrical arrangement of cable forces on each side of its support tower; instead, it uses a cantilever tower, set at a 42-degree angle[9] and loaded by cable stays on only one side. This design requires that the spar resist bending and torsional forces and that its foundation resists overturning. While this leads to a less structurally efficient structure, the architectural statement is dramatic. The bridge is 700 feet (213 m) in length and crosses the river without touching the water, a design criterion that helps protect the salmon spawning grounds beneath the bridge. The cable stays are not centered on the walkway but instead divide the bridge into a major and minor path.
The cable for the bridge totals 4,342 feet and was made in England. The dial of the sundial and a small plaza beneath the support tower are decorated with broken white tile from Spain. The bridge's deck is surfaced with translucent structural glass from Quebec, which is illuminated from beneath and glows aquamarine at night. The steel support structure of the bridge was made in Vancouver, Washington and transported in 40-foot sections by truck to Redding.
Plans for the Sundial Bridge began in the 1990s, when the city of Redding budgeted $3 million for a pedestrian bridge across the river. However, costs escalated after Calatrava's design was chosen in 1996. The bridge was completed in 2004, three years later than originally planned, at a cost of $23.5 million, with funding from the Redding-based McConnell Foundation.The expense was justified on the basis that it would increase tourism in the Redding area, which also features Shasta Dam as another architectural marvel, and it has been successful in that goal.Burney FallsLenticular CloudsMccloud fallsMt. ShastaSundial Bridge
Lenticular clouds (Altocumulus lenticularis) are stationary lens-shaped clouds that form in the troposphere, normally in perpendicular alignment to the wind direction. Lenticular clouds can be separated into altocumulus standing lenticularis (ACSL), stratocumulus standing lenticular (SCSL), and cirrocumulus standing lenticular (CCSL). Because of their shape, they have been offered as an explanation for some Unidentified Flying Object (UFO) sightings.
Where stable moist air flows over a mountain or a range of mountains, a series of large-scale standing waves may form on the downwind side. If the temperature at the crest of the wave drops to the dew point, moisture in the air may condense to form lenticular clouds. As the moist air moves back down into the trough of the wave, the cloud may evaporate back into vapor. Under certain conditions, long strings of lenticular clouds can form near the crest of each successive wave, creating a formation known as a "wave cloud." The wave systems cause large vertical air movements and so enough water vapor may condense to produce precipitation. The clouds have been mistaken for UFOs (or "visual cover" for UFOs), particularly the round "flying saucer"-type, because these clouds have a characteristic lens appearance and smooth saucer-like shape; also, because lenticular clouds generally do not form over low-lying or flat terrain, many people have never seen one and are not aware clouds with that shape can exist. Bright colors (called irisation) are sometimes seen along the edge of lenticular clouds.[1] These clouds have also been known to form in cases where a mountain does not exist, but rather as the result of shear winds created by a front.Burney FallsLenticular CloudsMccloud fallsMt. ShastaSundial Bridge