pip. ?fo^.' 2^2T' CORALVILLE RESERVOIR — CALDWELL 89 



ing the drainage of Eapid Creek, a minor eastern confluent, from 

 the trench of the Iowa River. Twenty identifiable mounds are 

 present, following in a series, NE-SW, down the constricted back- 

 bone of the ridge. Local informants indicate that previous to ex- 

 tensive farming activities, many more mounds were visible. Of the 

 total gToup, 19 are conical in shape, ranging from 18 to 30 feet in 

 diameter, with a maximum elevation of about 3 feet. A single low 

 linear mound (ca. 20 feet X 50 feet) is identifiable. Except the lat- 

 ter, all the mounds show evidence of disturbance, usually in the form 

 of a pit in the apex of the structure. Although most of the uncon- 

 trolled excavation is attributable to the last century, there is some 

 evidence of recent digging. Since the site lies just outside of the 

 reservoir, no testing was attempted. 



THE CROSHECK SITE (13JH2) 



The occupation area of this site is situated upon an extensive 

 riverine flat comprising the entire north bank of the river and ex- 

 tending onto the highlands beyond (fig. 11). The flat has been 

 dissected by two intermittent streams into three unequal segments, 

 labeled, from the east: A, B, and C. In the summer of 1956 the 

 entire area was under cultivation ; however, it was possible to sample 

 portions of A and B by excavating between the crop rows (12 test 

 pits, each 3 feet square). Section C, in its exposed position, was 

 deemed too badly disrupted by flood waters to warrant attention. 

 Included within and just below the plow zone were limited quantities 

 of chipping debris but no definitive artifacts. Surface collections 

 are more extensive. The previous landowner, Eugene Crosheck, has 

 assembled a substantial collection from all three topographic areas. 

 These data are discussed briefly below. The 1956 Smithsonian party 

 also secured a small surface sample, but limited only to field segments 

 A and B. A detailed description is presented under "Artifacts" in 

 this section. 



Two distinct mound groups formerly existed as part of the 13JH2 

 site complex: 



Croshech group. — A series of four mound structures was described 

 by Ward (1904, pp. 33-34) as situated upon the first bench above the 

 bottom land, 300 yards north of the river. An extensive test of the 

 designated area (fig. 11) produced only the basal fragment of an 

 unstemmed point (No. 3 below). Stratigraphic data did not suggest 

 the presence of mound structures. Local informants indicate that 

 they were probably destroyed by recent cultivation. 



Sweeney group. — ^TV^ard indicates another series of mounds on the 

 next rise, about 200 yards north of the previous grouping. Three 

 structures originally were present (ibid.). Recent cultivation has 



