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MERRIMAC ,1 a See also:river in the See also:north-eastern See also:part of the See also:United States, having its See also:sources in the See also:- WHITE
- WHITE, ANDREW DICKSON (1832– )
- WHITE, GILBERT (1720–1793)
- WHITE, HENRY KIRKE (1785-1806)
- WHITE, HUGH LAWSON (1773-1840)
- WHITE, JOSEPH BLANCO (1775-1841)
- WHITE, RICHARD GRANT (1822-1885)
- WHITE, ROBERT (1645-1704)
- WHITE, SIR GEORGE STUART (1835– )
- WHITE, SIR THOMAS (1492-1567)
- WHITE, SIR WILLIAM ARTHUR (1824--1891)
- WHITE, SIR WILLIAM HENRY (1845– )
- WHITE, THOMAS (1628-1698)
- WHITE, THOMAS (c. 1550-1624)
White Mountains of New See also:Hampshire, and flowing See also:south into See also:Massachusetts, and thence See also:east and north-east into the See also:Atlantic Ocean. With its largest See also:branch it has an extreme length of about 183 m. The Merrimac proper is formed at See also:Franklin, New Hampshire, by the junction of the Pemigewasset and Winnepesaukee See also:rivers. The former is the larger branch and rises in the White Mountains in See also:Grafton See also:county; the latter is the outlet of See also:Lake Winnepesaukee. The valley of the Merrimac was formed before the glacial See also:period and was filled with See also:drift as the See also:ice retreated; subsequently the high See also:flood See also:plain thus formed has been trenched, terraces have been formed, and at different places, where the new channel did not conform to the pre-glacial channel, the river has come upon buried ledges, relatively much more resistant than the drift below, and waterfalls have thus resulted. The river falls 269 ft. in a distance of See also:Ito m. from Franklin to its mouth. The greater part of the See also:total fall is at six points, and at each of four of these is a See also:city which owes its importance in See also:great measure to the See also:water-See also:power thus provided, See also:Lowell and
1 The name is an See also:Indian word said to mean " See also:swift water." In popular usage the spelling " Merrimack " is used at places along the river above See also:Haverhill.
See also:- LAWRENCE
- LAWRENCE (LAURENTIUS, LORENZO), ST
- LAWRENCE, AMOS (1786—1852)
- LAWRENCE, AMOS ADAMS (1814–1886)
- LAWRENCE, GEORGE ALFRED (1827–1876)
- LAWRENCE, JOHN LAIRD MAIR LAWRENCE, 1ST BARON (1811-1879)
- LAWRENCE, SIR HENRY MONTGOMERY (1806–1857)
- LAWRENCE, SIR THOMAS (1769–1830)
- LAWRENCE, STRINGER (1697–1775)
Lawrence in Massachusetts, and See also:Manchester and See also:Concord in New Hampshire; at Lowell there is a fall of 30 ft. (See also:Pawtucket Falls), and at Manchester there is a fall of 55 ft. (Amoskeag Falls). The region drained by the river is 4553 sq. m. in extent, and contains a number of lakes, which together with some artificial reservoirs serve as a storage See also:system. On the navigable portion of the river, which extends 17a M. above its mouth, are the cities of See also:Newburyport, near its mouth, and Haverhill, at the See also:head of See also:navigation. In 1899-1908 the Federal See also:government dredged a channel from Newburyport to Haverhill (14.5 m.) 7 ft. deep and 150 ft. wide at mean See also:low water; vessels having a. draft of 12.5 ft. could then pass over the See also:outer See also:bar of Newburyport.
End of Article: MERRIMAC
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