Results
1626 - 1650 of 4837 Items << < 61 62 63 64 65 66 67 68 69 70 > >>
1626 - 1650 of 4837 Items << < 61 62 63 64 65 66 67 68 69 70 > >>
|
The Logan River, one of Utah's better trout streams, has carried more than its share of the increased fishing pressure of the past few years. Careful management of the drainage by the U.S. Forest Service has kept the Logan River free of serious...
1950-05-01
|
|
Topography is at the heart of many hydrologic models at a very basic level, since it serves to define watersheds, the most basic hydrologic model element. This presentation will review Terrain Analysis as it is used to derive information from...
2006-06-28
|
|
The following two projects have been carried out to clarify the impact of these foam
stabilizers, and to compare their foam stabilizing power to one another as well as the
cling ability.
The first project investigated the impacts of four...
2008-01-15T23:22:10Z (iso8601)
|
|
Warming of the terrestrial biosphere due to the anthropogenic addition of carbon dioxide to the earth’s atmosphere is becoming a major focus of scientific inquiry. Predictions of the extent of this warming are hampered by uncertainty in the...
2007-01-09T17:13:14Z (iso8601)
|
|
The controls of forest vegetation, wildfires, and harvest vegetation disturbances on the frequency and magnitude of sediment delivery from a small watershed (~3.9 km2) in the Idaho batholith are investigated through numerical modeling. The model...
2004-02-19
|
|
A water quality monitoring survey of three drainage subareas in the Kaneohe Bay watershed and selected sites in the bay was conducted between July and December 1975 to ascertain the dry-weather quality baseline. The three drainage subareas were...
2008-07-17
2008-07-17 1976-05-01 |
|
View from top of a hill of a canal drainage pipe leading down toward the canal. Below, same area as 1:04:048, October 1974.
1974-10-01
|
|
Morton J. Elrod was an early Montana
botanist, naturalist, University of Montana professor, and photographer. The
collection consists of materials produced and collected by Elrod from his
college and early teaching years through the...
|
|
With the current population boom, the number of Texas residents will almost double by 2030. With the expected increase in demand for water, the scarcity of water is an urgent issue and research is being conducted to find ways to improve water...
2007-11-20
2007-11-20 2002-08-14 |
|
These records of the Montana Attorney General's Office
consist of interoffice correspondence (1969-1978); general correspondence (1963-1966)
arranged by correspondent and subject, including dockets and informal opinions; annual...
|
|
CN-12-201-219NA Klamath Project - Oregon-California. View of freshly excavated trench containing plastic drainage tubing and the appurtenant cinder envelope; November 1972; Bureau of Reclamation photo by D. W. Stein
1972-11-01
2009-09-03 2007-03-27 |
|
Summary of plan for organizing an irrigation district in the Moapa Valley for flood control, water storage, and drainage. Project Number: State Office No. 172, Clark County No. 12
2024-05-19
|
|
P12-201-4625NA Klamath Project, OR-CA. 4' Sheet's Foot Roller, Klamath Straits Drain -- Photo shows approved 4' Sheet's Foot Roller attached to D-5 cat; June 29, 1979; USBR photo by D.J. Kline
1979-06-29
2009-06-09 2007-03-19 |
|
(e.) Excavation of canal prism.—Almost the only excavating done was at points above the upper guard-lock.
From the canal prism proper there were taken 1,733 cubic yards of selected gravel for use in filling the core of the protection wall so...
|
|
P12-201-4617NA Same as #4615 above
2009-06-09 2007-03-19 |
|
P12-201-4609NA Klamath Project, OR-CA. 'A' Dike #12, Klamath Straits Unit East -- Test Excavation of north ditch Sta. 3+00 on 'A' dike #12 with 627 'B' scraper, scraper found surface even too wet, let alone being able to excavate; May 4, 1979;...
1979-05-04
2009-06-08 2007-03-19 |
|
Irrigation Project Lands
The character and disposition of materials underlying the soils of irrigated lands are of great significance to the development and use of those lands. As indicated subsequently, the character of the soil layer of lands...
|
|
CHAPTER X
Power Production SUMMARY Divides between watersheds constitute no barrier to power system development, and power generated in the Columbia River Basin is transported to many areas beyond its actual boundaries. Consideration of... |
|
Ground Waters
Variation in subsurface materials results in marked local differences in ground-water supplies.
Ground water is reasonably abundant in the alluvial fans which fringe the floor of the Willamette Valley. In the southern part of the...
|
|
South Coulee Dam--Grouting foundation drainage system, stations 26+50 to 29+25, approximate elevation 1512. Risers are located along the side slopes of the cut-off trench.
1947-07-23
|
|
P-12-200-4138NA Klamath Project - Oregon-California. View looking west at Station 29+40; December 1975; USBR photo by R. J. Hamilton
1975-12-01
2009-02-09 2006-10-23 |
