A journey from Harare to Bulawayo was once a lesson in Zimbabwe’s rich hydrology, a traverse across veins of life that sustained the nation. In 2006, the rivers I crossed were vibrant, flowing entities, their waters a lifeline for communities, livestock, and vast swathes of agricultural land.
By Rudairo Mapuranga
Today, that same journey paints a starkly different picture: a desolate panorama of sandbanks, invasive weeds, raw sewage, and a silence that speaks volumes about an impending ecological catastrophe. The story of our dying rivers is the story of a nation jeopardizing its own future.
The crisis announces itself immediately upon leaving the capital. The Mukuvisi River, which threads through Harare, is a tragic opening act. Once a flowing waterway, it is now a choked drain, suffocating under the weight of effluent and water hyacinth. This is not a river; it is a warning. Further west, the situation at Lake Chivero and the Manyame River is even more alarming. These should be crown jewels in our water infrastructure. Instead, they are repositories of pollution and silt, their capacities shrinking visibly from year to year due to unchecked catchment degradation.
As the highway unfolds past Selous, the scale of the disaster becomes terrifyingly clear. The Mupfure River, a crucial tributary feeding into the Manyame system, is heavily silted, its banks eroded by artisanal mining and streambank cultivation. Farmers, desperate for fertile soil, till right to the water’s edge, destabilizing the banks. Miners, desperate for gold, dig directly into the riverbed, altering its course and chemistry.
The narrative intensifies around Kadoma. Here, the Muzvezve River, a name synonymous with gold deposits, has paid the ultimate price for the mineral wealth beneath it. It is now a labyrinth of mining trenches and settling ponds, its flow disrupted and its water contaminated by chemicals. Beyond Kadoma, the great Munyati River, one of Zimbabwe’s major waterways, is a shadow of its former self. Its flow, once powerful and reliable, has been bled dry by extensive agricultural abstractions and mining activities along its tributaries. The same fate has befallen the Sebakwe River in Kwekwe. This river is the sole feeder of the Sebakwe Dam, which supplies water to the cities of Kwekwe and Redcliff. Its accelerated siltation is a direct threat to urban water security, turning stretches that were once perennial into seasonal streams.
Between these major systems lie smaller but equally vital rivers: the Sessami, the Umsweswe, and the Rwizi, which are seldom mentioned but are critical for rural communities and the health of the broader ecosystem. These, too, are drying up, their courses fragmented and polluted.
By the time you reach Gweru, the pattern is inescapable. The Gweru River itself, which gives the city its name, is struggling. Its flow is thin and anaemic, often carrying a cocktail of agricultural and industrial runoff. The vibrant ecosystems it once supported are fading memories.
The journey into Matabeleland reveals the final, most brutal chapter of this story. Rivers that were the very lifeblood of the region — the Shangani, Insiza, Umguza, and Mpopoma — are now mere geographical features on a map, not functioning waterways. For most of the year, they are vast, empty expanses of sand. The Insiza River, which feeds the Insiza Dam, is so heavily silted that the dam’s capacity and lifespan are being drastically reduced. This has dire consequences for Bulawayo’s already precarious water supply. The Umguza River, north of Bulawayo, is similarly degraded, its catchment eroded by overgrazing and deforestation, ensuring that even when rains come, the water runs off the land too quickly, causing erosion instead of recharging the aquifer.
So, what happened? Is this the fault of mining, with its unchecked riverbed operations and chemical pollutants? Or is it agriculture, with its relentless streambank cultivation, abstraction, and deforestation of catchments? The frustrating — and perhaps most important — answer is that it is both.
Experts confirm that this is a crisis of cumulative pressure. An official from the Environmental Management Agency (EMA) recently stated, “We are witnessing the collective impact of decades of abuse. From illegal mining operations that churn up riverbeds to widespread streambank cultivation that destroys riparian buffers, our rivers have been assaulted from all sides. They are treated as dumping grounds and sandpits, not the critical natural infrastructure they are.”
The Zimbabwe National Water Authority (ZINWA) has issued equally grave warnings. “The hydrological profiles of major rivers like Manyame, Sebakwe, and Munyati have been fundamentally altered,” a ZINWA official noted. “Inflows into our major dams are declining at an alarming rate because the catchments are no longer able to hold and release water sustainably. Siltation is our biggest enemy. If a concerted, national effort is not mobilized immediately, we will bequeath to the next generation a landscape of sand where rivers once flowed.”
The truth, though harsh, is simple. The arteries that carry life from Harare to Bulawayo are collapsing. This is no longer a theoretical environmental concern; it is a direct threat to national security, economic stability, and human survival. The debate over whether mining or agriculture is the primary culprit is a dangerous distraction. While we argue, the rivers die.
The call to action must be equally collective and decisive. We need enforced and respected buffer zones along all rivers. We need a moratorium on all riverbed mining, backed by consistent and impartial law enforcement. We need to support farmers with sustainable land-use practices that protect waterways instead of destroying them. Most importantly, we need a national consciousness that views a healthy river not as an obstacle to development, but as its very foundation.
The rivers will not wait for our debates to conclude. They are disappearing now. The question is whether we will act in time to save them, or simply be the generation that watched them die.
