People argue about whether a swamp is worth protecting until the year the rains fail, and then the argument settles itself.
What the wetlands do
Papyrus swamp performs three jobs simultaneously, none of which anything else in the catchment does as well. It stores water through the wet season and releases it slowly through the dry one. It drops sediment out of suspension, which is why water leaving a healthy swamp is clearer than water entering it. And it takes up nutrients, including the fertiliser runoff that would otherwise feed algal growth downstream.
Drain it and all three stop at once. This is the single most consequential land-use change in the catchment and the least visible, because a drained wetland under cultivation looks productive.
Named systems feeding the Rwizi include Nyakafumura, Kanyabukanja, and the swamps of the Mushasha basin. Most have no signage, no boundary marker on the ground, and no constituency arguing for them.
Two Ramsar sites
The Rwizi system connects to two wetlands of international importance under the Ramsar Convention: the Lake Mburo–Nakivali Wetland System, and the Sango Bay Wetland Forests near the Lake Victoria shore.
Ramsar listing is a commitment by the government of Uganda to maintain the ecological character of those sites. It carries obligations. It does not by itself put a fence around anything, and both sites sit downstream of everything described on our threats page.
Lake Mburo
Lake Mburo National Park sits on the Rwizi drainage and depends on it. It is the smallest of Uganda's savanna parks and the only one holding significant populations of impala, and it supports buffalo, zebra, waterbuck, warthog, hippopotamus and a substantial bird list.
The park matters here for a reason beyond the wildlife. It is the clearest available demonstration that the Rwizi's condition is not only an agricultural or municipal question. What happens on a hillside in Buhweju eventually shows up in a lake ninety kilometres away.
What we do about wetlands
Restoration where conversion has happened
Papyrus recovers if you stop cultivating and give it time. Some of the most effective work we do is simply negotiating that time.
Read moreBoundary work
Supporting district authorities to mark and map wetland boundaries, so that where the line falls stops being a matter of opinion.
Alternatives for wetland farmers
Nobody stops cultivating a productive wetland because they were asked nicely. Livelihood alternatives are the whole game.
Read moreMonitoring
Photographing fixed points over years, which is unglamorous and the only way to know whether recovery is real.
Read more
Wetland work is slow and cheap
A hectare of papyrus left alone for three years costs almost nothing and returns more than most interventions of the same price. What it needs is somebody funding the negotiation and the follow-up.