Where does the Danube River originate?
45400182#7
As early as 1847 the following definition can already be found in the "Universallexikon des Großherzogtums Baden" (Universal Lexicon of the Grand Duchy of Baden): “Danube, the biggest river of Germany, rises at the Martinskapelle in a wild and lonely area of the Black Forest, is called Brege at its origin and forms the river Danube in Donaueschingen where it is unified with the Brigach." (German original: „Donau, der größte Fluß Deutschlands, entspringt bei der Martinskapelle in einer wilden und einsamen Gegend des Schwarzwaldes, heißt am Anfang Brege… und bildet erst in Donaueschingen, wo sie sich mit der Brigach vereinigt, die Donau.“)
Source of the Danube
21209639#1
The Danube was once a long-standing frontier of the Roman Empire, and today flows through 10 countries, more than any other river in the world. Originating in Germany, the Danube flows southeast for , passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine before draining into the Black Sea. Its drainage basin extends into nine more countries. The Danube river basin is home to fish species such as pike, zander, huchen, Wels catfish, burbot and tench. It is also home to a large diversity of carp and sturgeon, as well as salmon and trout. A few species of euryhaline fish, such as European seabass, mullet, and eel, inhabit the Danube delta and the lower portion of the river.
Danube
21209639#6
Classified as an international waterway, it originates in the town of Donaueschingen, in the Black Forest of Germany, at the confluence of the rivers Brigach and Breg. The Danube then flows southeast for about , passing through four capital cities (Vienna, Bratislava, Budapest and Belgrade) before emptying into the Black Sea via the Danube Delta in Romania and Ukraine.
Danube
5323725#1
The Danube is Europe's second-longest river. It starts in the Black Forest in Germany as two smaller rivers—the Brigach and the Breg—which join at Donaueschingen, and it is from here that it is known as the Danube, flowing generally eastwards for a distance of some , passing through several Central and Eastern European capitals, before emptying into the Black Sea via the Danube Delta in Romania.
List of tributaries of the Danube
21209639#22
Before the last ice age in the Pleistocene, the Rhine started at the southwestern tip of the Black Forest, while the waters from the Alps that today feed the Rhine were carried east by the so-called "Urdonau" (original Danube). Parts of this ancient river's bed, which was much larger than today's Danube, can still be seen in (now waterless) canyons in today's landscape of the Swabian Alb. After the Upper Rhine valley had been eroded, most waters from the Alps changed their direction and began feeding the Rhine. Today's upper Danube is but a meek reflection of the ancient one.
Danube
33012245#0
The Bära is a river in Baden-Württemberg, Germany. The Bära is a tributary of the Danube, and originates at the confluence of the Obere Bära ("Upper Bära") and the Untere Bära ("Lower Bära"). The Bära, together with the Lower Bära, which is longer and has a larger drainage basin, has a combined length of .
Obere and Untere Bära join to form the Bära in the "Galgenwiesen" ("gallows meadow"), about four kilometers above the resort of Bärenthal. This runs moderately without significant inflow a further south-southeast in Talschlingen, draining an additional area of . Passing through Bärenthal at last it flows into Fridingen and there, near the town mill, it flows last of all in a southwesterly direction into the upper Danube, approximately at the entrance to the Fridingen Danube Bend.
Bära
5762591#1
The Budovar is a system of natural and channeled water flow of Patka-Budovar. It originates from the eastern slopes of the Fruška Gora mountain, near the village of Čortanovci as the "Patka" (Cyrillic: "Патка") at an altitude of 215 m. The river flows to the southeast, through the village of Beška, where it is crossed by the Belgrade-Novi Sad highway. After it receives the smaller stream from the left near the village of Krčedin, the river is known as the Budovar. The river turns south and flows parallel to the highway, next to the village of Novi Karlovci, before it empties into the Danube at the village of Stari Banovci.
Budovar
25637#16
The Danube is by far Romania's most important river, not only for transportation, but also for the production of hydroelectric power. One of Europe's largest hydroelectric stations is located at the Iron Gates, where the Danube surges through the Carpathian gorges. The Danube is an important water route for domestic shipping, as well as international trade. It is navigable for river vessels along its entire Romanian course and for seagoing ships as far as the port of Brăila. An obvious problem with the use of the Danube for inland transportation is its remoteness from most of the major industrial centers. Moreover, marshy banks and perennial flooding impede navigation in some areas.
Geography of Romania
58041307#0
The Kaljina is a river in the central-northeastern part of Bosnia and Herzegovina, municipality of Sokolac. The source of the river is on Ozren Sarajevski, in the area of "Vrela" near Ozren village, while the majority of its course runs across Nišići karst plateau, where the river passes through a village with a same name, Kaljina, which is the largest settlement on its course. After about 26 kilometers of scenic flow from source to confluence, through the pristine nature of the plateau, the Kaljina meets Bioštica near the town of Olovo. 
The Krivaja basin is known for an abundant fish fauna, rich in species, some of which are critically endangered, such as Danube Salmon (or Danube Taimen) "(Hucho hucho)". All the Krivaja tributaries and especially its headwaters are important spawning grounds for both Danube Taimen and its prey, Common nase (Chondrostoma nasus) and Grayling (Thymallus thymallus).
The Kaljina, its parent the Bioštica, and the Stupčanica are the main source of the Krivaja waters, and all three are unspoiled in sense of water quality, their hydromorphology, natural surroundings and river biodiversity. The rich pool of indigenous salmonids such as Danube brown trout ("Salo truta fario", Danube lineage), spawning grounds for "huchen" and "nase", can only be maintained through statutory protection, and preservation of the Krivaja basin streams and rivers uninterrupted flow from construction of dams. However plans for hydropower development exist, and represent a real risk for unspoiled natural environment of the region.
Kaljina (river)
98615#1
The modern Danube Delta began to form after 4000 BCE in a bay of the Black Sea, when the sea rose to its present level. A sandy barrier blocked the Danube bay where the river initially built its delta. Upon filling the bay with sediment, the delta advanced outside this barrier-blocked estuary after 3500 BCE, building several successive lobes: the St. George I (3500–1600 BCE), the Sulina (1600–0 BCE), the St. George II (0 BC–present) and the Chilia or Kilia (1600 CE–present). Several other internal lobes were constructed in the lakes and lagoons bordering the Danube Delta to the north (Chilia I and II) and toward the south (Dunavatz). Much of the alluvium in the delta and major expansion of its surface area in the form of lobes resulted from soil erosion associated with the clearing of forests in the Danube basin during the 1st and 2nd millennium. Geologist Liviu Giosan told "The New York Times":
Danube Delta