USGS Open-File Report 01-282 -- Table 5

Open-File Report 01-282

Sediment-Deposition Rates and Organic Compounds in Bottom Sediment at Four Sites in Lake Mead, Nevada, May 1998

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Table 5. Depth and porosity in bottom-sediment cores at four sites in Lake Mead, May 1998

[Abbreviation: ND, not determined. Depth is mid-point of an interval]

Site 1: Las Vegas Bay -- shallow		Site 2: Las Vegas Bay -- deep		Site 3: Overton Arm		Site 4: Colorado and Virgin Rivers confluence (pre-impoundment)
Depth (centimeters)	Porosity	Depth (centimeters)	Porosity	Depth (centimeters)	Porosity	Depth (centimeters)	Porosity
1.5	0.84	2.5	0.79	0.75	0.85	0.5	0.95
4.5	.81	7.5	.79	2.25	.75	1.5	.91
7.5	.78	12.5	.78	3.75	.78	2.5	.92
10.5	.79	17.5	.67	5.25	.77	3.5	.90
13.5	.80	22.5	.69	6.75	.74	4.5	.86
16.5	.74	27.5	.65	8.25	.78	5.5	.83
19.5	.79	32.5	.59	9.75	.75	6.5	.82
22.5	.74	37.5	.64	11.25	.73	7.5	.82
25.5	.71	42.5	.81	12.75	.73	8.5	.82
28.5	.69	47.5	.73	14.25	.73	9.5	.80
31.5	.58	52.5	.73	15.5	.77	10.5	.78
34.5	.63	57.5	.78	16.5	.76	11.5	.76
37.5	.72	62.5	.76	17.5	.71	12.5	.79
40.5	.67	67.5	.78	18.5	.74	13.5	.79
43.5	.71	72.5	.76	19.5	.75	14.5	.80
46.5	.65	77.5	.80	20.5	.76	15.5	.80
52.5	.71	82.5	.79	21.5	.76	16.5	.78
57.5	.71	87.5	.73	22.5	.79	17.5	.78
62.5	.70	92.5	.75	23.5	.75	18.5	.81
67.5	.68	97.5	.75	24.5	.77	19.5	.84
72.5	.72	102.5	.75	25.5	ND	20.5	.82
77.5	.69	107.5	.70	26.5	.72	21.5	.83
82.5	.67	112.5	.70	27.5	.75	22.5	.81
87.5	.69	117.5	.53	28.5	.74	23.5	.79
92.5	.71	122.5	.41	29.5	.75	24.5	.81
97.5	.71	127.5	.38	30.5	.74	25.5	.81
102.5	.68			31.5	.75	26.5	.82
107.5	.66			32.5	.76	27.5	.81
112.5	.55			33.5	.78	28.5	.81
117.5	.49			34.5	.76	29.5	.81
122.5	.50			35.5	.79	30.5	.81
				36.5	.79	31.5	.80
				37.5	.76	32.5	.81
				38.5	.76	33.5	.80
				39.5	.76	34.5	.80
				40.5	.76	35.75	.81
				41.5	.78	37.25	.80
				42.5	.77	38.75	.81
				43.5	.69	40.25	.81
				44.5	.74	41.75	.80
				45.5	.74	43.25	.79
				46.5	.72	44.75	.81
				47.5	.70	46.25	.82
				48.5	.72	47.75	.81
				49.5	.71	49.25	.82
				50.5	.63	50.75	.81
				51.5	.62	52.25	.79
				52.5	.66	53.75	.79
				53.5	.71	55.25	.79
				54.5	.74	56.25	.79
						58.25	.79
						59.75	.80
						61.25	.80
						63	.81
						65	.80
						67	.82
						69	.81
						71	.80
						73	.78
						75	.78
						77	.77
						79	.79
						81	.78
						83	.76
						85	.76
						87	.76
						89	.76
						91	.75
						93	.76
						95	.77
						97	.78
						99	.77
						101	.78
						103	.73
						105	.71
						107	.74
						109	.73
						111	.39
						113	.39