268:
and several small short rivers that empty into the Black Sea. The
Dvoynitsa receives mainly rain feed, which forms 45% of the inflow. The period of high water lasts for four months, during which the average flow is 7 m/s. It largest tributary is the Velikovska reka (25 km).
463:
a few kilometers to the north. The castrum at Obzor was abandoned in the 5th–6th century AD. Along the ridge of the
Eminska Planina south of the river there were several fortresses that protected the northern border of the
249:. It then turns in direction east–southeast for the duration of its remaining course, as it valley widens and divides the Kamchiyska Planina to the north and Eminska Planina to the south. The Dvoynitsa flows into the
550:
472:
constructed the important fortress and town of Kozyak on a height over river banks some 3 km upstream from its mouth, which guarded the only road along the coastline. During the
260:
Its drainage basin covers a territory of 479 km. To the north its basin follows the ridge of the
Kamchiyska Planina, which separates it from the neighbouring basins of the
443:
of Varna
Province. Its waters in the middle and lower course are utilised for irrigation, the main crops being barley, maize, peaches, apples, grapes, almonds, lavender.
587:Мичев (Michev), Николай (Nikolay); Михайлов (Mihaylov), Цветко (Tsvetko); Вапцаров (Vaptsarov), Иван (Ivan); Кираджиев (Kiradzhiev), Светлин (Svetlin) (1980).
427:
and downstream of
Golitsa its valley serves as border between the two administrative divisions. There are three settlements along its course, the village of
476:(1277–1280) Kozyak was temporarily occupied by the Byzantines. In 1366 the fortress was one of the several Bulgarian maritime strongholds captured by
154:
79:
241:
The river takes its source under the name
Lekarnitsa from a spring at an altitude of 440 m in the Eminska Planina division of the
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628:
618:
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and the
Fandakliyska reka. To the south the ridge of the Eminska Planina forms the boundary with the drainage systems of the
623:
440:
459:
linking a road station and castrum at the modern town of Obzor just south of the river to the settlement at
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327:. There is diverse avifauna with at least 50 species only in the river mouth, such as
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484:. It was finally destroyed in the late 14th century during the
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257:. Due to the small gradient, the river forms many meanders.
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The river banks are covered with forest vegetation of
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305:, often overgrown with climbing vegetation of
253:in the northeastern outskirts of the town of
451:In the Antiquity the river was crossed by a
411:and others, that support the aquatic birds.
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225:) is a 52 km long river in eastern
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512:Geographic Dictionary of Bulgaria 1980
599:): Наука и култура (Nauka i kultura).
558:Bulgarian Academy of Sciences: Nature
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468:. In the 13th and 14th century the
13:
435:of Burgas Province and village of
14:
640:
593:Geographic Dictionary of Bulgaria
207:479 km (185 sq mi)
395:. There are fish populations of
148: • coordinates
73: • coordinates
1:
595:] (in Bulgarian). София (
589:Географски речник на България
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42:Physical characteristics
629:Tributaries of the Black Sea
619:Landforms of Burgas Province
549:Boev, Zlatozar (July 2015).
491:
236:
187: • elevation
112: • elevation
7:
624:Landforms of Varna Province
136: • location
60: • location
10:
645:
478:Amadeus VI, Count of Savoy
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116:440 m (1,440 ft)
431:and the town of Obzor in
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170:42.8278000°N 27.8833000°E
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95:42.8283306°N 27.4964000°E
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455:road that followed the
419:The Dvoynitsa flows in
415:Settlements and economy
199:52 km (32 mi)
486:Bulgarian–Ottoman wars
357:western yellow wagtail
319:. At places there are
175:42.8278000; 27.8833000
100:42.8283306; 27.4964000
433:Nesebar Municipality
409:Flathead grey mullet
377:Eurasian sparrowhawk
229:that flows into the
191:0 m (0 ft)
461:Cape St. Athanasius
166: /
91: /
614:Rivers of Bulgaria
474:Uprising of Ivaylo
441:Byala Municipality
385:Eurasian scops owl
349:great reed warbler
551:"River Dvoynitsa"
353:common kingfisher
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64:Eminska Planina,
16:River in Bulgaria
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482:Savoyard Crusade
470:Bulgarian Empire
466:Byzantine Empire
337:common sandpiper
243:Balkan Mountains
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425:Varna Provinces
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405:Romanian barbel
329:common redshank
311:leather flowers
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266:Hadzhiyska reka
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381:common buzzard
333:common moorhen
303:Oriental beech
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397:Eurasian carp
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373:birds of prey
371:, etc. Local
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361:squacco heron
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161:27°52′59.88″E
158:42°49′40.08″N
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86:27°29′47.04″E
83:42°49′41.99″N
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566:. Retrieved
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369:little egret
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214:
212:
480:during the
401:common chub
341:common tern
173: /
98: /
608:Categories
581:References
564:(1): 65–68
393:little owl
365:grey heron
204:Basin size
492:Citations
389:tawny owl
251:Black Sea
237:Geography
231:Black Sea
219:Bulgarian
215:Dvoynitsa
141:Black Sea
22:Dvoynitsa
437:Popovich
429:Koznitsa
375:include
325:cattails
262:Kamchiya
227:Bulgaria
223:Двойница
36:Bulgaria
27:Location
447:History
345:mallard
283:poplars
279:willows
247:Golitsa
32:Country
421:Burgas
316:Smilax
295:linden
273:Nature
196:Length
130:
54:
51:Source
597:Sofia
591:[
568:1 May
554:(PDF)
453:Roman
321:reeds
307:ivies
291:ashes
255:Obzor
126:Mouth
570:2024
562:1989
423:and
391:and
323:and
313:and
299:oaks
287:elms
213:The
439:in
610::
560:.
556:.
519:^
500:^
488:.
407:,
403:,
399:,
387:,
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347:,
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339:,
335:,
331:,
309:,
297:,
293:,
289:,
285:,
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233:.
221::
572:.
217:(
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