Embraer EMB 121 Xingu 51 of which were exported to countries outside Brazil. Currently, the French Air Force is the largest operator with 23 aircraft still in service. Embraer EMB 121 Xingu The Embraer EMB 121 Xingu (pronounced ""shingoo"") is a twin-turboprop fixed-wing aircraft built by the Brazilian aircraft manufacturer, Embraer. The design is based on the EMB 110 Bandeirante, using its wing and engine design merged with an all-new fuselage. The EMB 121 first flew on 10 October 1976. A modified form of the EMB 121, the EMB 121A1 Xingu II, was introduced on 4 September 1981 with a more powerful engine (PT6A-135),
Upper American River Project fish passage by the project's dams, which segment parts of the upper South Fork American River, the Rubicon River and their tributaries. Water is diverted from the Rubicon River to a storage reservoir, Loon Lake, from which it is released through the Loon Lake Powerhouse to Gerle Creek. This water is intercepted and diverted into Silver Creek, a tributary of the South Fork American River, flowing through the Robbs Peak Powerhouse into Union Valley Reservoir, the project's principal reservoir. Water from Ice House Reservoir also enters Union Valley via the Jones Fork Powerhouse. From Union Valley, water flows through the