Download or read book Hydrologic Significance of the Granitic Parent Material of the San Gabriel Mountains written by Jay Samuel Krammes and published by . This book was released on 1969 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrologic Significance of the Granitic Parent Material of the San Gabriel Mountains California written by Jay Samuel Krammes and published by . This book was released on 1969 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was conducted on the San Dimas Experimenta1 Forest in southern California. It deals with a field and laboratory evaluation of several physical and hydraulic properties of the weathered parent material and suggests how these properties may relate to flood runoff problems. A simple correlation analysis shows that only one variable, non-capillary porosity had a significant relationship with saturated hydraulic conductivity. A factor analysis indicated that information from 19 descriptive variables could be attributed to 5 common factors. The 5 common factors show the types of variables that would be most useful in describing parent material. Darcy's equation was used to compute saturated hydraulic conductivity. The resulting computations, utilizing Reynolds number criterion, yielded values which were well within the laminar flow range. However, differing Reynolds numbers were obtained by using average grain size as compared to average pore diameters. A comparison between field hydraulic conductivity and laboratory hydraulic conductivity showed no significant correlation between the two measurements. Moisture-retention curves of the surface and parent material show little difference between the two materials. Retention and detention storage values for the soil and parent material were calculated and used to assess the occurrence of overland flow. The importance of the parent material, as it influences overland flow, was evaluated utilizing existing rainfall records, streamflow hydrographs, moisture storage values and the permeability results of this study. Total storm and 24-hour rainfall data were not very useful for evaluating the presence or absence of overland flow. Rainfall was budgeted into the soil and parent material according to the respective permeabilities and storage capacities of those two strata. Overland flow was computed by subtracting the amount of water in-filtered from the amount of rain falling during a six minute time period. Rainfall hyetographs and streamflow hydrographs indicated that overland flow is of limited occurrence even during flood runoff periods. Flood peaks were thought to be the result of storm seepage flow from the side slopes rather than from direct channel interception or overland flow. Any overland flow coming from recently burned watersheds probably results from a change in the soils permeability characteristics. The soil resists wetting because of a water repellency created by wildfire temperatures.
Download or read book USDA Forest Service Research Paper PSW written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and published by . This book was released on 1978 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book GTR WO written by United States. Forest Service and published by . This book was released on 1975 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1972 with total page 1492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Symposium on the Environmental Consequences of Fire and Fuel Management in Mediterranean Ecosystems August 1 5 1977 Palo Alto California written by and published by . This book was released on 1977 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of North American Geology written by Geological Survey (U.S.) and published by . This book was released on 1970 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of North American Geology written by and published by . This book was released on 1969 with total page 1490 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Download or read book Lithogenic and Pedogenic Features in Weathered Granitic Bedrock and Their Influence on Water Flow and Virus Transport written by Christopher Scott Frazier and published by . This book was released on 1997 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Theses in Geology 1967 1970 written by Dederick C. Ward and published by Geological Society of America. This book was released on 1973 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Weathered Bedrock and Their Influence on Hydrologic Systems and Ecosystems written by Jonathan Alan Wald and published by . This book was released on 2001 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Mineral Resources of the Los Angeles Needles Salton Sea San Bernardino and Trona 1 X 2 NTMS Quadrangles written by and published by . This book was released on 1982 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1970 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Papers written by and published by . This book was released on 1973 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terrain Pedology and Hydrology of Zero order Watershed 38 Years After Conversion from Chaparral to Perennial Grass written by Tanja Nicole Williamson and published by . This book was released on 1999 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Edaphic Role of Weathered Bedrock in a Seasonally dry Jeffrey Pine Plantation written by Kenneth Raymond Hubbert and published by . This book was released on 1999 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
