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Trnava
Trnava
	Bridge across the Trnava river at Goričan
Location
Country	Croatia
City	Čakovec
Physical characteristics
Source	at Vukanovec village
• location	Gornji Mihaljevec municipality, Međimurje County, Croatia
• coordinates	46°27′0″N 16°19′40″E / 46.45000°N 16.32778°E
• elevation	300 m (980 ft)
Mouth	Mura near Goričan,; Međimurje County, Croatia
• location	Croatia
• coordinates	46°23′30″N 16°43′0″E / 46.39167°N 16.71667°E
• elevation	140 m (460 ft)
Length	47 km (29 mi)
Basin size	250 km2 (97 sq mi)
Basin features
River system	Danube basin
Tributaries
• left	brooks Dragoslavec, Goričica, Pleškovec,; Knezovec, Hrebec, Brezje, Boščak,; Murščak and Korenatica
• right	brooks Kopenec and Sratka
Progression	Mur→ Drava→ Danube→ Black Sea

The Trnava is a river in northern Croatia, a right tributary of the Mura River and the last significant one to flow into Mura before its confluence with Drava. It flows through Međimurje County.

Geography and hydrography

The river is 46,9 km (29,14 mi) long and its watershed drains an area of about 250 km² (96,5 sq.mi). It has its source at an elevation of 300 meters near the village of Vukanovec in the Gornji Mihaljevec municipality, which is situated in the hilly, northwestern part of the County. The upper course of the river flows southwards, then turns by the village of Macinec to the east. It flows further as a slow-moving plain stream, mouthing into the Mura. The river mouth is located near the village of Goričan at an elevation of 140 meters.

Trnava is incorporated into the water retention ponds' and irrigation canal network of Međimurje County. Water level of the river can fluctuate throughout the year, being occasionally very low during periods of drought and sometimes extremely high after heavier rains.

Throughout its course, Trnava receives the waters of many tributaries (most of them coming from the left side, like Dragoslavec, Goričica, Pleškovec, Knezovec, Hrebec, Brezje, Boščak, Murščak, Korenatica, and a few of them from the right side, like Kopenec and Sratka), becomes wider, deeper and slower, and finally empties into the Mura.

Along its banks is a chain of villages (Gornji Mihaljevec, Macinec, Nedelišće, Pribislavec, Štefanec, Mala Subotica, Palovec, Strelec, Držimurec, Turčišće) as well as the town of Čakovec, the County seat.

History

In the past, Trnava was a left tributary of the Drava River, but following the occasional changes of watercourses of the Drava and Mura in many centuries ago (due to flooding) it was cut through by Mura, becoming the latter's right tributary. The lower course of the river still exists today and is called Stara Trnava (=Old Trnava), being incorporated into the Bistrec-Rakovnica water canal network, which empties into the Drava east of Donja Dubrava.

During past centuries Trnava was important for filling up the moats around the Zrinski Castle in Čakovec. In the first half of the 20th century the river was not yet properly regulated and this often led to flooding. The last serious flood in Čakovec occurred on 12 March 1963. Since then the river banks have been reconstructed and raised, so that flooding stopped.