Weirs

Water delivered in a canal can also be measured with devices called weirs which require precision construction, calibration, and measuring. 16 Less accurate, but also inexpensive and easier, is the float method, in which the area of cross section of the canal (A in m2) is multiplied by the velocity of water (V in m/sec) to obtain flow (Q in liters/sec): 17 ❋ Unknown (1991)

But for these they made weirs, that is, a hedge of small rived sticks or reeds of the thickness of a man's finger. ❋ James Wharton (N/A)

Oysters and crabs and such fish as they take in their weirs is their best relief. ❋ James Wharton (N/A)

They're caught using structures called weirs, which workers construct from aluminum pickets. ❋ Unknown (2008)

Natural or man-made cascades, such as weirs and spillways provide potential breeding sites for simuliid blackflies. ❋ Unknown (1996)

To accomplish flocculation, mixing is necessary and may be accomplished hydraulically, in turbulent flow conditions at specially made structures such as weirs or "flocculation chambers", or at the suction side of the pump; it can also be accomplished mechanically (manually or with paddles, rakes, turbines, propellers, etc.). ❋ Unknown (1992)

So they turned to unrestrained terror: attacking villages, preferably at dawn and during foul weather, when Native Americans were most vulnerable; indiscriminately slaughtering elders, women, and children; undermining the foundations of Native society by destroying lodging, food, crops, and fishing weirs, causing death from exposure and starvation; scalping and raping; pursuing fugitives ruthlessly; executing or enslaving captives. ❋ Col. Matthew Moten (2011)

Look now for the weirs built to provide a steady flow, and the mill races diverting that flow to the mill wheel. ❋ Unknown (2011)

Remind me: are the locks and weirs of the Panama Canal still working? ❋ Unknown (2009)

Its numerous flood-control measures included dredging and the installation of weirs. ❋ Evan Ramstad (2011)

A range of honey-stone hills gave the town naturally steep and sprawling streets, making this district of wonder-workers a veritable warren – as Farien would discover soon enough – though the river itself, only a series of braided streams when it was first discovered, had been manipulated by weirs into a single channel that accessed the fish-rich waters of the ocean. ❋ Unknown (2009)

It's not just the royals who can take advantage of the UK's huge potential for renewable energy on and off shore – from our wind and sun to our waves and river weirs. ❋ Unknown (2011)

He visits all the towns and villages along the river from Oxfordshire to London and describes the magnificent royal residences, as well as the bridges and docks, locks and weirs, found along its 215-mile run. ❋ Unknown (2010)

When I ran into work on Tuesday 5th January there was a little bit of ice along the edges of the river but two days later the temperature had dropped a bit more and ice formed in the still pools above the weirs. ❋ Unknown (2010)

He listed five ideas, including a plan to get help clearing bureaucratic hurdles so energy-generating turbines can be installed at five weirs in the Thames. ❋ Unknown (2010)

She bid me take life easy, as the grass grows on the weirs; ❋ W.B. Yeats (2000)

The intense colors of the pools which vary between blue, green, yellow and milky are caused by the high calcium bicarbonate content of the water which is precipitated biologically through the presence of great numbers of microscopic mosses which under certain conditions of temperature and turbulence attract the precipitation of calcite in underwater sills which grow upwards to form natural weirs. ❋ Unknown (2009)

In two places, there are terraced lakes separated by tufa weirs like the travertine pools of Huanglong Scenic Area to the south; these sites, Shuzheng Lakes and Nuorilang Lakes, with 19 and 18 lakes respectively, are less well-developed geologically than the Huanglong pools, but much larger in size. ❋ Unknown (2009)