The Fourth Plate

A journey through Lake Elementaita and Lake Nakuru reveals how changing rainfall patterns are reshaping ecosystems and communities in East Africa’s Rift Valley

Kenya’s Great Rift Valley lakes are experiencing unprecedented change. At Lake Elementaita, where scalding hot springs once bubbled from the valley floor, rising waters have submerged these ancient geological wonders—leaving only silence in their wake. “All gone,” said Mr. Naftalli Kahiga Kamau, my guide, who everyone called “Mr. Stone.”
His real name, Kahiga—meaning “stone” in Kikuyu. The name seemed apt: he was quiet, steady, unshakeable, with a mind full of facts about every bird, bush, and beast around Lake Elementaita. He had promised to guide us to the lake’s famous hot springs. But as it turned out, the landscape had its own plans.
We arrived to find the hot springs vanished, submerged beneath the swollen waters of Lake Elementaita. The moment landed softly, like mist—the realization that the land, and water, could change so fast, so quietly, that even the most solid stone could only wonder at its mystery.

The transformation of Lake Nakuru: From flamingo haven to flood plain
Elementaita isn’t alone. A few hours down the Rift, Lake Nakuru tells a story both different and eerily similar. In the heart of Nakuru National Park—a protected jewel spanning nearly 188 square kilometers—Lake Nakuru has always been a magnet for life. Its milky blue water, shallow and bracingly alkaline (pH 10.5; alkalinity 122 meq l⁻¹), sits more than 1,700 meters above sea level, ringed by golden-barked acacias and volcanic ridges. But it wasn’t the chemistry that drew the world’s gaze; it was the birds, especially the lesser flamingos.
There were days in the 1990s when scientists recorded up to 1.5 million flamingos here at a time, turning the lake into a surreal “pink carpet” rippling under African sun. With 495 bird species—all flutter, swoop, and song—Nakuru was an avian orchestra, the lake its stage.

Climate change’s paradox: When too much rain transforms an ecosystem

Then the rains changed everything. Over the last decade, East Africa’s skies opened up like never before. The Nakuru region’s annual rainfall surged 50%—from 1,000 to 1,500 millimeters—as warming oceans and intensifying El Niño cycles rewrote the region’s climate story.
The lake, with nowhere else for its water to go, simply grew. In 2020 alone, Nakuru’s surface area swelled by over 70% from its long-term average, swallowing up visitor roads, park buildings, and—most painfully—the algae-rich shallows that once fed the flamingos.
The chemistry changed. With so much fresh water flooding in, the lake’s salinity plunged. The blue-green algae—Arthrospira fusiformis—that formed the backbone of the flamingos’ diet all but vanished. The birds left with it, flying hundreds of miles to other Rift Valley or Tanzanian lakes, in search of food. Once a place where you could see thousands of flamingos at a glance, Nakuru’s “pink carpet” has mostly folded up, the legendary flocks now only an occasional echo of their former glory.
Mr. Stone, never short on perspective, pointed out that other Rift lakes, ahh as Bogoria and Elementeita are also swelling, their shorelines creeping further from the acacia forests every year. “Sometimes,” he said, “we think Africa is always drying, but here, it’s the water that is winning.” His words ring true not just for Kenya but across the globe.

Global wetland crisis: A tale of two continents

Curiously, as Nakuru and its sister lakes expand, wetlands in countries like India are vanishing by the day. A major national survey found that India lost nearly one-third of its natural wetlands between 1970 and 2014, much of it to encroaching farmland, urban sprawl, and shrinking monsoon rainfall.
Here, climate change is the arsonist, drying lakes to dust. In East Africa, it plays the opposite role – that of a flood engineer, overwhelming the landscape with too much water.
This paradox underscores an uncomfortable truth: climate change doesn’t follow a single script. It’s not one story or one villain. In one basin, it burns. In another, it drowns. For flamingos, it’s the difference between feast and famine, between birth and migration.
For the people living on these shores—tour guides like Mr. Stone, rangers, villagers—it means hope mixed with uncertainty. The economic cost is real: Nakuru alone lost over $3 million in tourism revenue when floods shut down park roads and scattered the flamingos in 2020.

Adaptation and resilience in the face of change

Yet there is resilience in the face of this watery upheaval. The acacia trees along Nakuru’s new shorelines have become nurseries for pelicans and cormorants. Buffalos and hippos wade through fields that were dry savanna a decade ago. The land shifts, the lake grows, and life adapts – quickly, smartly, if given the smallest chance.
As sunset painted Nakuru’s flooded landscape in amber and gold, I watched Mr. Stone standing at the water’s edge, his silhouette unmoved against the changing light. Now I understood the wisdom in his name.
A stone doesn’t just represent strength: it bears witness to change, shaped by the very forces it endures. Here in Kenya’s Rift Valley, where lakes swallow shorelines and flamingos seek new homes, even the steadiest stones must learn to swim.