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At least 163 records · Page 9Linked to original sources
USGS1971

Preliminary flood-frequency relations and summary of maximum discharges in New Mexico; a progress report

The magnitude and frequency of floods is defined regionally for streams in New Mexico. An analysis was made, using multiple- regression techniques, relating flood peaks of 2, 5, 10, 25, and 50-year recurrence intervals to selected physical and climatic basin characteristics. The state was divided into three flood regions, and the resulting equations and associated standard error of prediction are presented for each of these regions. In addition the maximum observed discharges at regular and crest-stage gaging stations, and all peak discharges by indirect measurements at miscellaneous sites are presented in tabular and graphical form. The equations developed in the study can be used to compute peak discharges of floods of given recurrence intervals for use in the design of drainage structures.

Open-File Report↗
USGS1972

Progress report: Apollo 16 sample documentation

This report is intended as a working document for use during the opening of the Apollo 16 sample containers and during the early phases of examination of the samples in the Lunar Receiving Laboratory (LRL). The information in this report was drawn from voice transcripts of the astronaut crew while on the lunar surface, from video tapes of lunar surface television, and from a "quick-look" at the returned 60 mm Hasselblad photographs. The planimetric station maps were compiled almost entirely from the television tapes. A thorough review of all data, plus a comparison of the rocks shown in the photographs with those in the LRL, should eliminate any errors or discrepancies. A major purpose of this document is, in fact, to point up gaps in our present knowledge of sample location, orientation, and documentation. This report will be superseded by a more accurate and complete report about two weeks hence. All sample numbers in the illustrations refer to container numbers. Those that have LRL numbers assigned as of this date are cross-referenced in table 1. The illustrations are grouped in order of ascending station numbers (fig. 1), and where possible are shown in order of ascending container numbers for each station. Table 1 also refers container numbers to pane numbers of this report.

Open-File Report↗
USGS1972

An evaluation of the use of drillers' logs in lithologic studies of the Ogallala Formation of the southern high plains of Texas, progress report, 1970-71

Logs made by water-well drillers were analyzed in conjunction with test-hole drilling and geophysical logging to evaluate usefulness of the driller's log in delineating areas that would be suitable for artificial recharge of the Ogallala Formation. This preliminary study indicates that lack of detailed and accurate information in many drillers' logs prevents their use as a reliable source of lithologic information. For many applications, such as evaluation of potential areas for artificial recharge, the value of more complete and more accurate information will be readily apparent as these applications become more widespread. More effort will be required in collecting lithologic information as part of the drilling operations.

Texas↗
USGS1974

Progress report on flood magnitude and frequency of Vermont streams

A technique is presented for estimating the magnitude and frequency of floods on streams in Vermont with drainage areas between 0.27 and 1,040 square miles. Multiple-regression techniques are used to define the relation between flood peaks, collected at a network of gaging stations maintained by the U.S. Geological Survey, and a set of basin characteristics. Results show that flood peaks may be estimated from knowledge of the basin's drainage area, average seasonal snowfall, area of lakes and ponds, and maximum 24-hour rainfall having a recurrence interval of 2 years. The relations are presented graphically for user convenience.

Vermont↗
USGS1975

Progress report on the water resources investigation of Martin County, Florida

The base of the shallow aquifer ranges from 125 feet (38 m) below sea level in the northwest part of Martin County to about 280 feet (85.3 m) below sea level in the southeast part of the county. Test holes also indicate a thick, highly permeable zone in the east part of the county which becomes thinner and interlaced with zones of lower permeability in the west part. Water levels decline about 2 to 5 feet (0.6 to 1.5 m) during the dry season (October 1973 to May 1974) in most areas of Martin County. Within the area influenced by the pumping of Stuart's public supply wells, water level declined 6 feet (1.8 m) between October 1973 and May 1974. Water levels during January - May 1974 in this area were 3 to 6 feet (0.0 to 1.8 m) lower than they were in January - May 1965. This difference was due to a three-fold increase in pumpage (0.8 to 2 mgd) from 1965 to 1974. Chloride concentrations in four salt water monitoring wells around the Stuart well field ranged from 35 to 45 mg/1 during the rainy season of 1973. No appreciative increase in chlorides was found by the end of the next dry season. Water from five surface water sites had higher concentrations of phosphorus than water found in a typical urban area in Fort Lauderdale. Water from seven sites contained concentrations of nitrogen less than the typical rural site average. Expansion of the test drilling program, observation of salt-water intrusion, water-level monitoring and continued nutrient sampling are planned for future study. An interpretative report will be prepared at the end of this investigation.

Florida↗