Issues in watershed analysis. Discussions at interdisciplinary and interagency workshops held at the Humboldt Interagency Watershed Analysis Center in McKinleyville, California. 17 p., 1994
Page 1. Logging and Forest Roads Related to Increased Debris Slides in Southwestern Oregon Michae... more Page 1. Logging and Forest Roads Related to Increased Debris Slides in Southwestern Oregon Michael P. Amaranthus, Raymond M. Rice, Nicholas R. Barr, and Robert R. Ziemer ABSTRACT-Debris slides over a 20-year period ...
Description: In January, 1998, the Pacific Southwest Region and Pacific Southwest Research Statio... more Description: In January, 1998, the Pacific Southwest Region and Pacific Southwest Research Station of the Forest Service initiated a collaborative effort to incorporate new information into planning future management of Sierra Nevada national forests. The ...
USDA Forest Service General Technical Report PSW- …, 1998
United States Department of Agriculture Forest Service Pacific Southwest Research Station, Genera... more United States Department of Agriculture Forest Service Pacific Southwest Research Station, General Technical Report PSW-GTR-168-Web. Flooding and Stormflows 1. Robert R. Ziemer 2. 1 An abbreviated version of this paper ...
The Energy Citations Database (ECD) provides access to historical and current research (1948 to t... more The Energy Citations Database (ECD) provides access to historical and current research (1948 to the present) from the Department of Energy (DOE) and predecessor agencies.
The Big Lagoon Bog is an inconspicuous 1.3 ha peatland in coastal northwestern California (Figs. ... more The Big Lagoon Bog is an inconspicuous 1.3 ha peatland in coastal northwestern California (Figs. 1&2). A reason the bog is of interest to me is that it contains both Sphagnum and Drosera rotundifolia—neither are rare by any stretch of the imagination. What makes this location special is that the bog is isolated with the nearest Drosera rotundifolia neighbors about 80 km north and 200 km south. Peat bogs are rare at low elevations along the coast in California. In contrast, the Darlingtonia bogs in the Klamath region are perennial wet, nutrient poor, ultramafic outcrops with little or no Sphagnum. The Big Lagoon Bog lies 3 m above sea level and is within 300 m of the Pacific Ocean coastline. The bog drains into Big Lagoon, a 590-ha brackish embayment separated from the ocean by a narrow 6 km long sand bar. Winter rainfall raises the water level in the lagoon several meters above sea level where hydrostatic pressure and high surf breaches the sand bar allowing the lagoon to drain into...
Abstract: The effects of road building and timber harvest on storm flow were evaluated at the Nor... more Abstract: The effects of road building and timber harvest on storm flow were evaluated at the North and South Forks of Caspar Creek in north coastal California. From 1963 through 1975, a total of 174 storms that produced peak discharges larger than 0.016 L s-1ha-1 in the untreated North Fork were studied. Storms producing flows this size and larger occur about 14 times each year and about 10 percent of the time. They are responsible for 83 percent of the annual water discharge and transport 99 percent of the suspended sediment. Selection cutting and tractor yarding second-growth redwood and Douglas-fir in the 424ha South Fork did not significantly change peak streamflows that occur about eight times a year — those larger than about 1 L s-1ha-1. For flows smaller than 1 L s-1ha-1, the first peaks in the fall increased by 300 percent after logging. The effect of logging on peak flow was best predicted by the percent of area logged divided by the sequential storm number, beginning with...
Issues in watershed analysis. Discussions at interdisciplinary and interagency workshops held at the Humboldt Interagency Watershed Analysis Center in McKinleyville, California. 17 p., 1994
Page 1. Logging and Forest Roads Related to Increased Debris Slides in Southwestern Oregon Michae... more Page 1. Logging and Forest Roads Related to Increased Debris Slides in Southwestern Oregon Michael P. Amaranthus, Raymond M. Rice, Nicholas R. Barr, and Robert R. Ziemer ABSTRACT-Debris slides over a 20-year period ...
Description: In January, 1998, the Pacific Southwest Region and Pacific Southwest Research Statio... more Description: In January, 1998, the Pacific Southwest Region and Pacific Southwest Research Station of the Forest Service initiated a collaborative effort to incorporate new information into planning future management of Sierra Nevada national forests. The ...
USDA Forest Service General Technical Report PSW- …, 1998
United States Department of Agriculture Forest Service Pacific Southwest Research Station, Genera... more United States Department of Agriculture Forest Service Pacific Southwest Research Station, General Technical Report PSW-GTR-168-Web. Flooding and Stormflows 1. Robert R. Ziemer 2. 1 An abbreviated version of this paper ...
The Energy Citations Database (ECD) provides access to historical and current research (1948 to t... more The Energy Citations Database (ECD) provides access to historical and current research (1948 to the present) from the Department of Energy (DOE) and predecessor agencies.
The Big Lagoon Bog is an inconspicuous 1.3 ha peatland in coastal northwestern California (Figs. ... more The Big Lagoon Bog is an inconspicuous 1.3 ha peatland in coastal northwestern California (Figs. 1&2). A reason the bog is of interest to me is that it contains both Sphagnum and Drosera rotundifolia—neither are rare by any stretch of the imagination. What makes this location special is that the bog is isolated with the nearest Drosera rotundifolia neighbors about 80 km north and 200 km south. Peat bogs are rare at low elevations along the coast in California. In contrast, the Darlingtonia bogs in the Klamath region are perennial wet, nutrient poor, ultramafic outcrops with little or no Sphagnum. The Big Lagoon Bog lies 3 m above sea level and is within 300 m of the Pacific Ocean coastline. The bog drains into Big Lagoon, a 590-ha brackish embayment separated from the ocean by a narrow 6 km long sand bar. Winter rainfall raises the water level in the lagoon several meters above sea level where hydrostatic pressure and high surf breaches the sand bar allowing the lagoon to drain into...
Abstract: The effects of road building and timber harvest on storm flow were evaluated at the Nor... more Abstract: The effects of road building and timber harvest on storm flow were evaluated at the North and South Forks of Caspar Creek in north coastal California. From 1963 through 1975, a total of 174 storms that produced peak discharges larger than 0.016 L s-1ha-1 in the untreated North Fork were studied. Storms producing flows this size and larger occur about 14 times each year and about 10 percent of the time. They are responsible for 83 percent of the annual water discharge and transport 99 percent of the suspended sediment. Selection cutting and tractor yarding second-growth redwood and Douglas-fir in the 424ha South Fork did not significantly change peak streamflows that occur about eight times a year — those larger than about 1 L s-1ha-1. For flows smaller than 1 L s-1ha-1, the first peaks in the fall increased by 300 percent after logging. The effect of logging on peak flow was best predicted by the percent of area logged divided by the sequential storm number, beginning with...
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