 View downstream at USGS station 50051310, Rio Cayaguas, showing high water lines and widening and scouring of channel by Hurricane Georges runoff. Channel bed elevation was lowered by approximately 30 cm in this reach. Photograph taken on September 28, 1998 by Matthew C. Larsen, USGS.
 View upstream at USGS station 50051310, Rio Cayaguas, showing high water lines and scouring of channel by Hurricane Georges runoff. Channel bed elevation was lowered by approximately 30 cm in this reach. Photograph taken on September 28, 1998 by Matthew C. Larsen, USGS.
 View under bridge, looking upstream at USGS station 50051310, Rio Cayaguas, showing debris left by Hurricane Georges runoff. Automatic water sampler intake is visible on right side of photograph. Photograph taken on September 28, 1998 by Matthew C. Larsen, USGS.
 View of upstream reach near USGS station 50051310, Rio Cayaguas, showing high water lines and scouring of channel by Hurricane Georges runoff. Channel bed elevation was lowered by approximately 30 cm in this reach. Photograph taken on September 28, 1998 by Matthew C. Larsen, USGS.
 
These structures, located near the Río Grande de Jayuya, lost most of their foundations during flooding as a result of heavy rain during Hurricane Georges September 21, 1998. Photographs taken September 28, 1998 by Sigfredo Torres and Jesús Rodríguez, USGS.
 
Upgradient and downgradient conditions of Río Grande de Jayuya after Hurricane Georges flooding September 21, 1998. Closest USGS station 50025155 Rio Saliente at Coabey near Jayuya, PR. Photographs taken September 28, 1998 by Sigfredo Torres and Jesús Rodríguez, USGS.
Bridge totally destroyed by Río Tanamá, probably as a result of backflow from Río Grande de Arecibo during Hurricane Georges, September 21, 1998. The closest USGS surface-water station is 50028400 Río Tanamá at Charco Hondo, PR. Photo mosaic by Philip González from photographs taken on September 28, 1998 by Sigfredo Torres and Jesús Rodríguez, USGS.
 Picture taken, from incoming flight heading east toward San Juan International Airport, of Río de La Plata river mouth and sediment plume, Sept. 25, 1998. The closest USGS surface-water station is 50046000 Rio de la Plata at Highway 2 at Toa Alta, PR. Photo taken by Philip González, USGS.
 Streams in the central mountains transported large amounts of debris derived from treefalls, debris flows, and erosion of channel beds and banks. Many of these streams, which pass through 1 to 2 meter diameter culverts under roads, completely overwhelmed the culvert capacity, resulting in flow and deposition over the road surface. Channels aggraded by as much as several meters on the upstream side of these sites. Photographs taken September 28, 1998 by Sigfredo Torres and Jesús Rodríguez, USGS.
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U.S. Department of the Interior |
U.S. Geological Survey
