In the 1790s, the river was wild and unpredictable, in some places four or more times wider than the twenty-first century incarnation of the river, even under regular conditions.
The rivers have regular hatches of mayflies, caddis and stoneflies.
During the last decades, there has been an increasing demand for monitoring water quality of many rivers by regular measurements of various water quality variables.
A regular river, except that to most Angelenos it's a secret.
Leticia possesses a customs house and, though not accessible by road, has regular river connections with Iquitos (Peru), Manaus (Brazil), Florencia (Caquetá department), and other jungle towns.
A new ferry stop for the Riverside Museum, which just saw its one-millionth visitor, marks the first time in around 50 years that this section of the river has had regular passenger service.
The former hotel currently hosts a cafe/club with a small beach by the river, and organises regular club events, concerts, creative meetings, workshops, food, fashion and music fairs.
Many had their own ideas for preventing future flooding, whether that be tree planting on the hillside, regular river dredging, or a ban on building on the flood plain.
On the cruise down the river, I received regular reports by radio that neither the campaign advance team nor the resourceful but frustrated Secret Service detail had found our new running mate.
Those of you who use the Blackwall Tunnel (the road under the Thames linking south-east London to the north side of the river) on a regular basis will have noticed some changes of late.
