About the park

The history of Ruaha

Name: Ruaha National Park
Address: Tanzania

Ruaha's emptiness is not an accident. It is Hehe country that fought Germany to a standstill and lost everything for it, a colonial tsetse reserve, a river that pastoralists were moved off land to help save, and a park that lost more than half its elephants in six years. Here is the documented story, with the uncomfortable parts left in.

If you only want the answer

Ruaha sits in the country the Hehe fought Germany over: Chief Mkwawa's warriors destroyed a German column at Lugalo on 17 August 1891, then fought on for seven more years before Mkwawa shot himself rather than be captured, on 19 July 1898. The park began as the Saba Game Reserve, gazetted by German administrators in 1910, renamed Rungwa Game Reserve by the British in 1946, and cut down into Ruaha National Park in 1964, with a south-eastern extension in 1974. Colonial tsetse and sleeping-sickness policy had already kept the region thin of settlement for decades before any of that. In 2008 the park nearly doubled when the Usangu wetlands were folded in, requiring pastoralist herders to take their cattle off land they had grazed for generations. The Great Ruaha River, the park's namesake, has run dry in stretches most dry seasons since the early 1990s, mainly because of upstream irrigation in the Usangu basin. Ivory poaching then cut the wider ecosystem's elephants from about 34,000 in 2009 to roughly 15,800 by 2015, before anti-poaching efforts stabilised the population. None of it happened by accident, and most of it is still visible from the road in.

Hehe country, and the war that made Iringa's name

Long before any reserve boundary was drawn, the highlands and river valleys west of Iringa were Hehe country. The kingdom took shape in the mid-nineteenth century under Munyigumba, who unified a scatter of smaller chiefdoms through marriage and conquest. When he died around 1879, his son Mkwawa became paramount ruler of Uhehe, a kingdom Hehe histories describe as stretching between the Great Ruaha and Kilombero rivers, the same river that gives the park its name today.

Germany's colonial administration collided with that kingdom on 17 August 1891. A column of roughly 320 mostly askari troops under commissioner Emil von Zelewski, confident enough in local spearmen to march without proper scouting, was ambushed at Lugalo by a Hehe force several thousand strong. Only three of the thirteen Europeans in the column survived, and most of the African soldiers were killed alongside them, including Zelewski, in one of the heaviest defeats German colonial forces suffered anywhere in East Africa.

Germany returned with artillery. On 28 October 1894, Colonel Friedrich von Schele stormed Mkwawa's fortified capital at Kalenga. The fort fell, but Mkwawa escaped and fought a guerrilla war for four more years while German forces answered with a scorched-earth campaign that burned crops and villages across Uhehe. Cornered near Kalenga on 19 July 1898, he shot himself rather than be taken alive. Some Hehe accounts dispute that the death was self-inflicted, a point never fully resolved and best treated as unverified. Not everyone stood with him: the Sangu, whose own capital the Hehe had sacked decades earlier, allied with German officer Tom von Prince and helped defeat Mkwawa near Iringa in 1896, a reminder that this history is rivalry as much as resistance.

German soldiers took Mkwawa's head as a trophy and shipped the skull to Germany. The 1919 Treaty of Versailles obliged its return, but it took until 1953 for governor Edward Twining to trace it among roughly 2,000 skulls held at a museum in Bremen. It was returned and enshrined at the Mkwawa Memorial Museum in Kalenga, outside Iringa, on 9 July 1954, where it remains. Every visitor who drives the Iringa road into Ruaha passes through the country Mkwawa died defending.

Tsetse first, then Saba, then Rungwa, then a park

Before any reserve was gazetted, the tsetse fly had already done much of the work of keeping this country empty. Across British-administered Tanganyika from the 1920s through the 1950s, sleeping-sickness policy used bush clearance, game destruction and forced resettlement of villages away from fly-infested valleys as tools of what historian Kirk Hoppe calls environmental and social engineering. The Rungwa reserve sat squarely inside that era and territory. How much of the specific depopulation around Rungwa and Ruaha traces to tsetse policy, rather than the land simply having always been thin bushland, is not well documented; treat any precise local claim as unverified until a primary record surfaces.

The reserve's own chronology is simpler. Germany gazetted the Saba Game Reserve in 1910, twelve years after Mkwawa's death, folding former Hehe country into the colonial conservation estate. British administrators, who took over German East Africa after the First World War, renamed it the Rungwa Game Reserve in 1946. In 1964, three years after independence, the southern portion of Rungwa was excised and elevated to national park status as Ruaha, after the river along its edge. A south-eastern extension followed in 1974, giving the park roughly the shape it held until 2008.

We have not found documentation of mass evictions tied to the 1910, 1946 or 1964 boundary declarations, the way there is for Shangaan removals from Gonarezhou in Zimbabwe. Tsetse-driven depopulation may have done that work first, leaving little population for the later gazettements to displace. If better records surface, this section will be corrected.

The Usangu wetlands, and what it cost

The Usangu plain west of the park was Sangu pastoralist country, grazed communally for generations before independence in 1961 dismantled the chiefly authorities that had managed the land. A 1967 Land Acquisition Act gave the state power to seize land for public purpose, and over the following decades tens of thousands of hectares of the plain's best grazing became state-run irrigated rice and ranching schemes. By 1990 the region's cattle herd had more than doubled since the 1950s, swelled by pastoralists who had migrated in from elsewhere, and ethnic Sangu owned only a minority of the animals grazing their own former commons.

Researchers working with Ruaha through the 1990s and 2000s, including the park's own ecologists, argued that removing livestock from the Usangu wetlands was necessary to restore the Great Ruaha's flow, a case laid out in a 2006 restoration plan published in Wetlands Ecology and Management. The Usangu Game Reserve was established on that reasoning, and in 2008 it was folded into Ruaha National Park with the wider wetlands, nearly doubling the park's area to its present 20,226 km².

What that meant on the ground was straightforward and hard. Grazing is not permitted inside a national park, so pastoralist households that had used the Usangu wetlands, some for generations, some as recent arrivals, were required to move their herds out. Secondary accounts describe cattle numbers removed running into the tens of thousands, but we could not trace that figure to a single checked primary count, so treat any specific eviction total as unverified. What is not in dispute is that the pastoralists were there first, and that the park's largest expansion came directly at their expense.

The river that gives the park its name, and its problem

The Great Ruaha River runs along the park's south-eastern edge, and in the dry season it is the reason anything is where it is: elephant, buffalo, lion and hippo all orbit its shrinking pools. Decreased dry-season flows have been recorded since the early 1990s, with the river documented running completely dry in stretches for the first time in 1993, a pattern repeated in dry years since; by 2019 it carried no flow at all for months at a time in places.

The primary documented cause is upstream water management in the Usangu basin rather than a shortfall in rainfall. Large-scale rice irrigation schemes developed from the 1960s onward draw heavily on the streams that feed the wetlands and, through them, the river, a link established in peer-reviewed land-use research published in 2008. Downstream, the Mtera Dam, built between 1970 and 1981 to feed the Kidatu hydropower station, depends on that same flow; Mtera and Kidatu together generate roughly half of Tanzania's electricity, part of why low flows became a national infrastructure problem and not only a conservation one.

Not every researcher accepts the standard version without qualification. A 2012 paper in the Journal of Eastern African Studies argued that the narrative blaming Usangu's irrigators alone is, in places, an oversimplified environmental panic, and that the fuller picture is more contested than conservation literature usually allows; we flag that disagreement rather than resolve it. What both sides agree on is the practical result: since the 2000s, park ecologists and water authorities have pushed managed releases and stricter irrigation permits aimed at restoring dry-season flow, and the 2008 Usangu annexation was explicitly part of that effort.

The ivory years

Ruaha once had the elephant numbers to match its size. Aerial surveys put the wider Ruaha-Rungwa ecosystem's population at around 34,000 in 2009. Commercial ivory poaching, feeding demand that made Tanzania one of the worst-hit countries in Africa's poaching crisis, cut the population by more than half in six years: the 2015 census found only 15,836 elephants, give or take 4,759, a decline officials and researchers attributed directly to poaching.

Rangers policing a park of more than 20,000 km² could not be everywhere at once, and the worst poaching years exposed how thin that coverage was. TANAPA and conservation partners, including the Southern Tanzania Elephant Program, responded through the 2010s with expanded aerial patrols and ranger support. The threats were not limited to ivory: in February 2018, six lions and 74 vultures were found dead in the park, apparently poisoned, a sign that poaching had widened well beyond elephants. A 2018 census confirmed the population had stabilised, and it remains Tanzania's largest today, though still far below its 2009 peak.

What you can see of this history today

Most visitors reach Ruaha the way visitors have for sixty years: on the road west out of Iringa, the town the Hehe still call their own, where Mkwawa's skull sits in its memorial museum at Kalenga, a short detour worth the time.

Park headquarters at Msembe, on the rift-valley floor beside the river, has been Ruaha's administrative heart since 1964, and its airstrip is still the main way in for visitors who fly rather than drive.

In the dry season, roughly June to October, the river tells the whole story at once: shrinking pools crowded with hippo and crocodile, elephants digging wells in the sand, and the baobabs that define Ruaha's skyline, many scarred by decades of elephants stripping bark for moisture. It is the park's signature spectacle, and also, if you know the history above, a picture of how strained the system has become.

The Usangu wetlands, the ground pastoralist herds were moved off in 2008, now sit inside the park's western reaches, seasonally reachable and managed to keep the Great Ruaha flowing. What you are looking at, on any game drive here, is not untouched wilderness. It is a landscape shaped by a war, a fly, an irrigation scheme and a poaching crisis, still being managed through all four.