Share
Johnstown-Western Pennsylvania Storms and Floods of July 19-20, 1977: Usgs Professional Paper 1211
Ray L. Hoxit
(Author)
·
Robert a. Maddox
(Author)
·
Charles F. Chappell
(Author)
·
Bibliogov
· Paperback
Johnstown-Western Pennsylvania Storms and Floods of July 19-20, 1977: Usgs Professional Paper 1211 - Hoxit, Ray L. ; Maddox, Robert a. ; Chappell, Charles F.
Choose the list to add your product or create one New List
✓ Product added successfully to the Wishlist.
Go to My Wishlists
Origin: U.S.A.
(Import costs included in the price)
It will be shipped from our warehouse between
Monday, July 22 and
Monday, July 29.
You will receive it anywhere in United Kingdom between 1 and 3 business days after shipment.
Synopsis "Johnstown-Western Pennsylvania Storms and Floods of July 19-20, 1977: Usgs Professional Paper 1211"
Widespread thunderstorms associated with two major squall lines, moved across Pennsylvania between the afternoon of July 19 and morning of July 20, 1977. The western part of outflow boundary produced by the second line became almost stationary in western Pennsylvania and resulted in 6 to 9 hours of nearly continuous thunderstorms. More than 6 inches of rain fell over a 400-square-mile area during this period. In the hills just north and east of Johnstown, rainfall totals were as much as 12 inches. Flash flooding was severe as the storms moved slowly southeastward across the Allegheny, Susquehanna, and Potomac River basins. Peak natural runoff rates greater than 1,000 cubic feet per second per square mile were common for streams draining up to 10 square miles. At eight gaging stations, recurrence intervals for the peak discharges were estimated to be 100 years or more. In addition to high surface runoff, some disasterous flooding also resulted from the failure of seven earthfill-gravity-type dams. At least 78 deaths were attributed to the flooding and eight persons were still listed as missing 1 year later. Total damages in the eight-county flood area were extremely high, possibly exceeding $500 million.
- 0% (0)
- 0% (0)
- 0% (0)
- 0% (0)
- 0% (0)
All books in our catalog are Original.
The book is written in English.
The binding of this edition is Paperback.
✓ Producto agregado correctamente al carro, Ir a Pagar.
