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Herbert N. Flippo

Publications and source records attributed to Herbert N. Flippo.

10 recordsLinked to original sources
USGS1990

Technique for estimating depths of 100-year floods in Pennsylvania

Techniques are developed for estimating 100-year flood depths in natural channels of unregulated Pennsylvania streams that drain less than 2,200 square miles. Equations and graphs are presented relating the depth of the 100-year flood above median stage and drainage area in five defined hydrologic areas in the State. Another graph defines the relation between drainage area and median depth of flow over the low point of riffles. Thus 100-year depths on riffles can be estimated by summing depth values derived from two simple relations.

Pennsylvania↗
USGS1972

Water resources of Lehigh County, Pennsylvania

Lehigh County occupies an area of 347 square miles in southeastern Pennsylvania. The northern part of Lehigh County is underlain by the Martinsburg Formation, which consists chiefly of shale and slate. The central part of the county, where most of the population centers are located and much of the urbanization is occurring, is underlain by alternating beds of limestone and dolomite. From oldest to youngest, these carbonate rocks are the Leithsville Formation, the Allentown Formation, the Beekmantown Group, and the Jacksonburg Formation. The southern part of the county is underlain chiefly by the shales, sandstones, and conglomerates of the Brunswick Formation and by metamorphic and igneous rocks.

Pennsylvania↗
USGS1971

Acidity control in Bald Eagle Creek and West Branch Susquehanna River, Clinton County, Pennsylvania

Regression analysis of chemical and physical data collected on Beech Creek resulted in two curves that relate the concentration of free hydrogen ion to the electrical specific conductance of the water. These curves provide a means of estimating, through use of data telemetered from a water-quality monitor on Beech Creek, the acid load in the stream at any time. These estimates of acid loads in Beech Creek will enable the operators of Foster Joseph Sayers Dam on Bald Eagle Creek to release sufficient alkaline water from the reservoir to prevent fish kills in lower Bald Eagle Creek that could be caused by the acid from Beech Creek. The acid content of the West Branch Susquehanna River upstream from the city of Lock Haven usually exceeds the amount that can be neutralized by Bald Eagle Creek. However, inasmuch as the alkaline content of 13ald Eagle Creek exceeds the amount required to effectively neutralize the acidity of Beech Creek, some water may be conserved in the reservoir for the purpose of improving the quality of the West Branch when the river is unusually acid.

Pennsylvania↗
USGS1970

Chemical and biological conditions in Bald Eagle Creek and prognosis of trophic characteristics of Foster Joseph Sayers Reservoir, Centre County, Pennsylvania

Foster Joseph Sayers. Reservoir will b.e impounded on moderately fertile soils; however, its water source, Bald Eagle Creek, is a bicarbonate-water stream that is over~y-enriched with nutrients. About 650 of the 1,730 acres to be inundated in summer are subject to infestation with aquatic weeds. Nuisance algal "blooms" are expected to occur in summer. The reservoir will stratify in early summer and water · releas·ed for conservation purposes and acid neutralization will consist mostly of hypolimnetic water. This water will be nearly depleted in. dissolved oxygen and will, at times, contain relatively high concentrations of heavy metallic ions and hydrogen:!sulfide.

Pennsylvania↗