Glicken, Harry <br/><br/>
Geology and ground-water hydrology of Spirit Lake blockage, Mount St. Helens, Washington, with implications for lake retention / 
by Harry Glicken, William Meyer and Martha Sabol. 
 - [Washington]:   [United States Government Printing Office],   [1989].  
 - iv, 33 p. :  ill., maps, tables ;  28 cm.  +2 diagr. + 1 map. 
 -  1789 .
<br/><br/> Conduct diagr. 1: topographic representation of top of debris-avalanche deposit, also showing other geologic units of spirit lake blockage.  Conduct diagr. 2: geologica cross-sections of spirit lake blockage cross-sections located on plate 1.  Conduct map: geologic map of spirit lake blockage, showing locations of drill holes, drainage divides, and critical, points relative to potential lake breakout. 
<br/><br/>Includes bibliographical references (p. 30-32). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanic ash, tuff, etc--Washington (United States)--Spirit Lake<br/>Groundwater--Washington (United States)--Spirit Lake
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Saint Helens, Mount (Washington)--Eruption--1980
<br/><br/><label>Dewey Class. No.: </label>551.490979784