SCSB#000: MLRA 77 Tables

Table 1. Major soil series by order and great group for MLRA 77 with areas of 10,000 acres or more.¹

Alfisols

Paleustalfs

Amarillo - Fine-loamy, mixed, thermic Aridic (NM, TX)
Arvana - Fine-loamy, mixed, thermic Petrocalcic (NM, TX)
Brownfield - Loamy, mixed, thermic Arenic Aridic (NM, OK, TX)
Dallam - Fine-loamy, mixed, mesic Aridic (NM, TX)
Patricia - Fine-loamy, mixed, thermic Aridic (NM, TX)
Perico - Fine-loamy, mixed, mesic Aridic (TX)
Springer - Coarse-loamy, mixed, thermic Udic (NM, OK, TX)
Spurlock - Coarse-loamy, carbonatic, mesic Calcidic (NM, TX)

Aridisols

Calciorthids

Potter - Loamy, carbonatic, thermic, shallow Ustollic (CO, NM, OK, TX)
Quay - Fine-silty, mixed, thermic Ustochreptic (NM, TX)
Ratliff - Fine-loamy, mixed, thermic Ustollic (NM, TX)

Haplargids

Faskin - Fine-loamy, siliceous, thermic Ustollic (NM, TX)
Jalmar - Loamy, mixed, thermic Arenic Ustollic (NM, TX)
Triomas - Fine-loamy, mixed, thermic Ustollic (TX)

Paleorthids

Pastura - Loamy, mixed, mesic, shallow Ustollic (AZ, NM, OK, TX, UT)
Upton - Loamy, carbonatic, thermic, shallow Ustollic (NM, TX)

Entisols

Torripsamments

Penwell - Siliceous, thermic Ustic (TX)

Ustifluents

Lincoln - Sandy, mixed thermic Typic (KS, OK, TX)

Ustipsamments

Circleback - Siliceous, thermic Alfic (TX)
Likes - Mixed, thermic Typic (KS, NM, OK, TX)
Tivoli - Mixed, thermic Typic (KS, NM, OK, TX)

Inceptisols

Ustochrepts

Berda - Fine-loamy, mixed, thermic Aridic (TX)
Mobeetie - Coarse-loamy, mixed, thermic Aridic (NM, TX)
Veal - Fine-loamy, carbonatic, thermic Aridic (OK, TX)
Midessa - Fine-loamy, mixed, thermic, Aridic (NM, TX)

Mollisols

Argiustolls

Lofton - Fine, mixed, thermic Vertic (KS, NM, OK, TX)

Calciustolls

Kimbrough - Loamy, mixed, thermic, shallow Petrocalcic (AZ, NM, TX)
Pep - Fine-loamy, mixed, thermic Aridic (TX)
Portales - Fine-loamy, mixed, thermic Aridic (NM, OK, TX)
Tascosa - Loamy-skeletal, mixed, thermic Aridic (TX)

Haplustolls

Bippus - Fine-loamy, mixed, thermic Cumulic (KS, NM, OK, TX)
Paloduro - Fine-loamy, mixed, thermic Aridic (TX)
Zita - Fine-loamy, mixed, thermic Aridic (NM, TX)

Paleustolls

Acuff - Fine-loamy, mixed, thermic Aridic (NM, TX)
Conlen - Fine-loamy, carbonatic, mesic Calciargidic (TX)
Darrouzett - Fine, mixed, thermic Pachic (TX)
Dumas - Fine-loamy, mixed, mesic Aridic (NM, TX)
Estacado - Fine-loamy, mixed, thermic Calciargidic (TX)
Gruver - Fine, mixed, mesic Aridic (NM, TX)
Mansker - Fine-loamy, carbonatic, thermic Calcargidic (NM, OK, TX)
Olton - Fine, mixed, thermic Aridic (NM, TX)
Pullman - Fine, mixed, thermic Torrertic (NM, OK, TX)
Sherm - Fine, mixed, mesic Torrertic (NM, OK, TX)
Sunray - Fine-loamy, mixed, mesic Calciargidic (TX)

Vertisols

Epiaquerts

Randall - Fine, montmorillonitic, thermic Ustic (OK, TX)

¹Source NRCS, W.M. Risinger, 1996.

Table 2. Soil series with soil physicsl properties that have an extent greater than 10,000 acres which have been mapped in MLRA 77 (Source NRCS, W.M. Risinger, 1996).
Series	Depth	Texture	Permeability	Drainage	Available Water Capacity(in/ft)		Slope	Area
	(in)		(in/hr)	Class	Low	High	%	(acres)

Acuff	0-12	L SCL	0.6-2	W	0.12	0.18	0-5	952,374
Acuff	0-12	CL	0.6-2	W	0.15	0.20	0-5
Acuff	12-38	CL SCL L	0.6-2	W	0.14	0.19
Acuff	38-80	CL SCL L	0.6-2	W	0.10	0.16
Amarillo	0-11	FSL	2-6	W	0.11	0.15	0-5	2,873,498
Amarillo	0-11	LFS	2-6	W	0.06	0.10	0-5
Amarillo	11-38	SCL CL	0.6-2	W	0.14	0.18
Amarillo	38-80	SCL CL	0.6-2	W	0.10	0.15
Arvana	0-8	FSL L	2-6	W	0.11	0.15	0-3	239,602
Arvana	0-8	LFS	0.2-6	W	0.06	0.10	0-3
Arvana	8-28	SCL FSL	0.6-2	W	0.12	0.18
Arvana	28-38	IND	0.1-0.6	W
Arvana	38-80	L SCL CL	0.6-2	W	0.10	0.16
Berda	0-10	L CL SCL	0.6-2	W	0.12	0.16	0-50	344,566
Berda	0-10	FSL	2-6	W	0.10	0.14	0-50
Berda	10-60	L CL SCL	0.6-2	W	0.12	0.16
Bippus	0-15	L CL	0.6-2	W	0.14	0.20		143179
Bippus	0-15	FSL	2-6	W	0.11	0.15
Bippus	15-66	CL L SCL	0.6-2	W	0.14	0.20
Brownfield	0-26	FS	6-20	W	0.03	0.08	0-5	454,614
Brownfield	26-60	SCL FSL	0.6-2	W	0.12	0.18
Brownfield	60-80	SCL FSL	0.6-2	W	0.11	0.15
Circleback	0-30	S FS	6-20	E	0.02	0.06	0-35	149,542
Circleback	30-80	S FS	6-20	E	0.02	0.08
Conlen	0-10	L CL	0.6-2	W	0.13	0.19	0-12	277,789
Conlen	0-10	FSL	2-6	W	0.10	0.15	0-12
Conlen	10-30	L CL SCL	0.6-2	W	0.08	0.16
Conlen	30-66	L CL SCL	0.6-2	W	0.10	0.18
Dallam	0-8	FSL	2-6	W	0.11	0.15	0-5	679,762
Dallam	0-8	LFS FS LS	2-6	W	0.06	0.10	0-5
Dallam	8-32	SCL CL	0.6-2	W	0.12	0.18
Dallam	32-80	CL SCL SICL	0.6-2	W	0.10	0.15
Darrouzett	0-6	CL SICL	0.6-2	W	0.15	0.20	0-5	110,751
Darrouzett	0-6	L SIL	0.6-2	W	0.15	0.20	0-5
Darrouzett	6-75	SICL CL C	0.2-0.6	W	0.14	0.19
Darrouzett	75-80	SICL CL C	0.2-0.6	W	0.10	0.16
Dumas	0-7	L SCL CL	0.6-2	W	0.14	0.19	0-5	178,432
Dumas	0-7	FSL	2-6	W	0.10	0.15	0-5
Dumas	7-34	CL SCL	0.6-2	W	0.15	0.20
Dumas	34-80	CL SCL L	0.6-2	W	0.10	0.16
Estacado	0-16	CL SICL	0.6-2	W	0.12	0.18	0-16	432,573
Estacado	0-16	L	0.6-2	W	0.12	0.18	0-16
Estacado	16-28	CL SCL	0.6-2	W	0.12	0.18
Estacado	28-60	CL SCL	0.6-2	W	0.12	0.18
Estacado	60-80	CL SCL	0.6-2	W	0.10	0.18
Faskin	0-8	FSL	2-6	W	0.10	0.15	0-3	172,839
Faskin	0-8	LFS FS	2-6	W	0.06	0.10	0-3
Faskin	0-8	SCL	0.6-2	W	0.12	0.18	0-3
Faskin	8-42	SCL L CL	0.6-2	W	0.12	0.18
Faskin	42-80	SCL L CL	0.6-2	W	0.10	0.15
Gruver	0-8	L	0.6-2	W	0.15	0.20	0-3	235,293
Gruver	0-8	FSL	2-6	W	0.11	0.15	0-3
Gruver	0-8	CL SICL	0.6-2	W	0.14	0.20	0-3
Gruver	8-52	CL	0.2-0.6	W	0.15	0.20
Gruver	52-80	CL	0.2-0.6	W	0.10	0.16
Jalmar	0-12	FS	6-20	W	0.03	0.08	0-8	248,058
Jalmar	0-12	LFS	6-20	W	0.05	0.10	0-8
Jalmar	12-30	FS LFS	6-20	W	0.03	0.08
Jalmar	30-80	FSL SCL	0.6-2	W	0.10	0.15
Kimbrough	0-8	L FSL	0.6-2	W	0.14	0.16	0-15	208,016
Kimbrough	0-8	L	0.6-2	W	0.14	0.16	0-25
Kimbrough	0-8	GR-L	0.6-2	W	0.12	0.14	0-15
Kimbrough	0-8	GR-L	0.6-2	W	0.12	0.14	0-25
Kimbrough	0-8	GR-FSL GR-SL	0.6-2	W	0.09	0.11	0-15
Kimbrough	0-8	GR-FSL	0.6-2	W	0.09	0.11	0-25
Kimbrough	8-36	IND	0.01-0.6	W
Kimbrough	8-14	GR-FSL L GR-L	0.6-2	W	0.13	0.15
Kimbrough	36-80	GRV-L	0.2-2	W	0.05	0.10
Kimbrough	14-24	IND		W
Likes	0-10	LFS LS	6-20	E	0.04	0.08	1-30	273,684
Likes	0-10	FS	6-20	E	0.02	0.06	1-30
Likes	10-80	LFS LS FS	6-20	E	0.02	0.08
Lincoln	0-11	FS S	6-20	SE	0.02	0.08	0-3	140,413
Lincoln	0-11	LS LFS	6-20	SE	0.06	0.11	0-3
Lincoln	0-11	FSL SL	6-20	SE	0.10	0.15	0-3
Lincoln	11-80	SR FS CL	6-20	SE	0.02	0.08
Lofton	0-9	CL	0.2-0.6	MW	0.14	0.18	0-1	180,202
Lofton	0-9	FSL	0.6-2	MW	0.10	0.14	0-1
Lofton	0-9	SICL	0.2-0.6	MW	0.14	0.18	0-1
Lofton	9-52	C SIC	0-0.06	MW	0.14	0.18
Lofton	52-80	C SIC SICL	0.06-0.2	MW	0.10	0.14
Mansker	0-12	L CL	0.6-2	W	0.13	0.19	0-10	352,412
Mansker	0-12	FSL	2-6	W	0.12	0.14	0-10
Mansker	12-28	L SCL CL	0.6-2	W	0.08	0.16
Mansker	28-66	CL SCL	0.6-2	W	0.10	0.18
Midessa	0-10	FSL	2-6	W	0.10	0.15	0-5	465,451
Midessa	10-30	SCL	0.6-2	W	0.12	0.18
Midessa	30-70	SCL CL	0.6-2	W	0.10	0.16
Mobeetie	0-10	FSL L	2-6	W	0.10	0.14	0-40	871,757
Mobeetie	10-42	FSL L	2-6	W	0.10	0.14
Mobeetie	42-72	FSL L	2-6	W	0.10	0.14
Olton	0-8	CL L	0.6-2	W	0.15	0.20	0-5	1,400,613
Olton	8-48	CL SICL C	0.2-0.6	W	0.15	0.20
Olton	48-80	CL SCL L	0.2-0.6	W	0.10	0.16
Paloduro	0-12	CL	0.6-2	W	0.14	0.18	0-16	146,821
Paloduro	0-12	SCL	0.6-2	W	0.12	0.18	0-16
Paloduro	0-12	L	0.6-2	W	0.12	0.18	0-16
Paloduro	12-80	L CL SCL	0.6-2	W	0.12	0.18
Pastura	0-4	L CL	0.6-2	W	0.17	0.20	0-25	165,111
Pastura	0-4	GR-L GR-CL	0.6-2	W	0.13	0.15	0-25
Pastura	0-4	SL FSL GR-FSL	2-6	W	0.12	0.14	0-25
Pastura	4-10	L CL GR-CL	0.6-2	W	0.14	0.16
Pastura	10-20	IND		W
Patricia	0-17	FS	6-20	W	0.04	0.10	0-5	899,617
Patricia	0-17	LFS	6-20	W	0.04	0.10	0-5
Patricia	0-17	FSL	2-6	W	0.10	0.14	0-5
Patricia	17-80	SCL	0.6-2	W	0.12	0.18
Penwell	0-13	FS	6-20	E	0.03	0.08	1-15	163,092
Penwell	0-13	LFS	6-20	E	0.04	0.09	1-15
Penwell	13-80	FS LFS	6-20	E	0.03	0.09
Pep	0-10	L	0.6-2	W	0.15	0.18	0-5	130,617
Pep	0-10	CL	0.6-2	W	0.15	0.18	0-5
Pep	10-32	CL SICL	0.6-2	W	0.13	0.15
Pep	32-80	L CL SICL	0.6-2	W	0.10	0.15
Perico	0-7	FSL L	2-6	W	0.10	0.15	0-5	111,700
Perico	0-7	LFS	2-6	W	0.06	0.10	0-5
Perico	7-80	SCL CL	0.6-2	W	0.12	0.18
Portales	0-8	L	0.6-2	W	0.17	0.19	0-5	266,047
Portales	0-8	CL	0.2-0.6	W	0.17	0.19	0-5
Portales	0-8	FSL	0.6-2	W	0.13	0.15	0-5
Portales	8-18	L CL	0.6-2	W	0.18	0.20
Portales	18-80	L CL	0.6-2	W	0.18	0.20
Potter	0-9	L CL	0.6-2	W	0.12	0.16	0-30	457,518
Potter	0-9	GR-L GR-CL GR-FSL	0.6-2	W	0.10	0.13	0-30
Potter	0-9	FSL	0.6-2	W	0.10	0.14	0-30
Potter	9-30	CBV-L GRX-L CBX-L	.6-6	W	0.01	0.06
Pullman	0-6	CL	0.2-0.6	W	0.15	0.19	0-3	3,228,350
Pullman	0-6	SICL	0.2-0.6	W	0.16	0.20	0-3
Pullman	6-38	C SIC	0.06-0.2	W	0.16	0.22
Pullman	38-52	CL SICL	0.06-0.2	W	0.14	0.19
Pullman	52-78	CL C SIC	0.06-0.2	W	0.10	0.16
Quay	0-9	FSL	2-6	W	0.13	0.15	0-15	130,461
Quay	0-9	L	0.6-2	W	0.16	0.18	0-15
Quay	0-9	CL SICL	0.2-0.6	W	0.19	0.21	0-5
Quay	9-26	CL SICL L	0.6-2	W	0.19	0.21
Quay	26-60	SCL CL L	0.6-2	W	0.14	0.21
Randall	0-6	C SIC	0-0.06	P	0.12	0.18	0-1	292,670
Randall	0-20	FSL L	0.6-2	MW	0.10	0.15	0-1
Randall	6-32	C SIC	0-0.06	P	0.12	0.18
Randall	0-20	SCL CL SICL	0.6-2	MW	0.12	0.18	0-1
Randall	32-61	C SIC	0.06-0.2	P	0.11	0.15
Randall	0-20	LFS	2-6	MW	0.04	0.09	0-1
Randall	61-80	C SIC	0.06-0.2	P	0.11	0.15
Randall	20-50	C SIC	0-0.06	MW	0.12	0.18
Randall	50-80	CL C SIC	0.06-0.2	MW	0.12	0.16
Ratliff	0-10	L	0.6-2	W	0.14	0.20	0-5	127,697
Ratliff	0-10	FSL	2-6	W	0.10	0.15	0-5
Ratliff	10-25	CL SCL L	0.6-2	W	0.12	0.18
Ratliff	25-80	CL SCL L	0.6-2	W	0.10	0.16
Sherm	0-5	CL	0.06-0.2	W	0.15	0.19	0-3	1,264,114
Sherm	0-5	SICL	0.06-0.2	W	0.16	0.20	0-3
Sherm	5-35	C SIC	0.06-0.2	W	0.13	0.18
Sherm	35-80	CL C SIC	0.06-0.2	W	0.10	0.17
Springer	0-16	LFS	6-20	W	0.06	0.10	0-10	165,509
Springer	0-16	LFS	6-20	W	0.06	0.10	0-8
Springer	0-16	FSL	2-6	W	0.10	0.15	0-10
Springer	0-16	FSL	2-6	W	0.10	0.15	0-8
Springer	16-42	FSL	2-6	W	0.10	0.15
Springer	16-42	FSL	2-6	W	0.10	0.15
Springer	42-56	LS LFS FS	6-20	W	0.06	0.10
Springer	42-56	LS LFS FS	6-20	W	0.06	0.10
Springer	56-80	FSL SCL	0.6-6	W	0.10	0.16
Spurlock	0-7	L CL SCL	0.6-2	W	0.13	0.17	0-9	109,273
Spurlock	0-7	FSL	2-6	W	0.10	0.14	0-9
Spurlock	0-7	LS	6-20	W	0.06	0.10	0-9
Spurlock	7-32	L CL SCL	0.6-2	W	0.10	0.16
Spurlock	32-80	CL SCL	0.6-2	W	0.12	0.16
Sunray	0-12	L CL SICL	0.6-2	W	0.15	0.20	0-8	458,495
Sunray	12-22	CL SCL L	0.6-2	W	0.14	0.19
Sunray	22-80	CL SCL	0.6-2	W	0.10	0.18
Tascosa	0-9	GR-L GR-SL GR-FSL	0.6-2	W	0.08	0.12	3-30	170,982
Tascosa	0-9	GRV-SL GRV-L GRV-FSL	0.6-2	W	0.06	0.10	3-30
Tascosa	9-20	GRV-L GRV-SL GR-SL	0.6-2	W	0.05
Tascosa	20-60	GRV-SL GRV-L GR-SL	2-6	W	0.03
Tivoli	0-7	LFS	6-20	E	0.07	0.11	5-45	197,388
Tivoli	0-7	FS	6-20	E	0.02	0.08	5-45
Tivoli	7-60	FS S	6-20	E	0.02	0.08
Triomas	0-16	FS	6-20	W	0.03	0.08	0-5	239,076
Triomas	0-16	LFS	6-20	W	0.04	0.08	0-5
Triomas	16-68	SCL	0.6-2	W	0.12	0.18
Triomas	68-80	SCL	0.6-2	W	0.10	0.16
Upton	0-5	GR-L GR-CL GR-SL	0.6-2	W	0.08	0.14	0-10	116,006
Upton	0-5	SL L CL	0.6-2	W	0.11	0.16	0-10
Upton	5-13	GR-L GR-CL GR-SL	0.6-2	W	0.08	0.14
Upton	13-21	CEM	0.01-0.6	W
Upton	21-70	GR-L GRX-L GRV-L	0.6-2	W	0.01	0.06
Veal	0-8	FSL	2-6	W	0.10	0.15	0-20	430,267
Veal	0-8	L CL	0.6-2	W	0.12	0.18	0-20
Veal	8-17	SCL CL L	0.6-2	W	0.10	0.18
Veal	17-60	CL SCL L	0.6-2	W	0.10	0.15
Zita	0-7	L CL SICL	0.6-2	W	0.15	0.20	0-3	180,245
Zita	0-7	FSL	0.6-2	W	0.10	0.15	0 3
Zita	7-24	CL L	0.6-2	W	0.15	0.20
Zita	24-60	CL L	0.6-2	W	0.10	0.16


Texture Abbreviations

C = Clay CEM=Cemented CL = Clay Loam FS = Fine Sand FSL = Fine Sandy Loam GR-CL = Gravelly Clay Loam GR-FSL = Gravelly Fine Sandy Loam GR-L = Gravelly Loam GR-SL= Gravelly Sandy Loam IND = Indurated	L = Loam LFS = Loamy Fine Sand LS = Loamy Sand S = Sand SCL = Sandy Clay Loam SIC = Silty Clay SICL = Silty Clay Loam SIL = Silt Loam SL = Sandy Loam SR = Stony Rocky

Drainage Class Abbreviations

E = Excessively SE=Somewhat excessively MW=Moderately well W = Well P=Poorly

Table 3. Characteristics of Acuff series at study sites from Unger et al. (1993).
Site and County							CaCO₃		Water Content at Potential of¹
Horizon	Sand	Silt	Clay	Textural Class	Bulk Density²	Organic Matter	Equiv.	pH	-0.033 MPa	-1.5 MPa

	-------%-------				g cm^-3	%	%		--- % by volume---
Site 1, Parmer, Texas
Ap	37.9	35.3	26.8	L	1.25	1.74	-	7.3	27.4	17.1
Bt1	33.3	28.9	37.8	CL	1.58	1.12	-	7.3	35.1	26.3
Bt2	31.6	28.4	40	C	1.46	0.72	-	7.5	33.8	24.3*
Bt3	37.6	24.6	37.8	CL	1.47	0.41	-	7.5	30.6	22.0*
Btk	26.4	27.6	46	C*	1.56	0.25	56.5	8	-	-
Site 2, Castro, Texas
Ap	35.9	34.8	29.3	CL	1.25	1.8	-	7.1	29.6	18.8
Bt1	32.9	28.8	38.3	CL	1.5	0.98	-	7.3	34.1	23.7
Bt2	46.1	19.4	34.5	CL	1.52	0.48	-	7.3	29	21.5
Bt3	51.5	15.5	33	SCL	1.56	0.3	-	7.4	27.3	20.5*
Btk	27.4	27.1	45.5	C*	1.65	0.17	55	7.9	-	-
Site 3, Lamb, Texas
Ap	69.2	13.3	17.5	FSL	1.35	0.63	-	7.5	15.9	8.8
Bt1	48.3	13	38.7	CL	1.58	0.73	-	7.6	33.8	20.7
Bt2	43.7	23.5	32.8	CL	1.51	0.34	-	7.6	27	16.9
Bt3	57.6	13.4	29	SCL	1.62	0.16	-	7.9	23.4	16.5
Btk	64.1	11.4	24.5	SCL	1.63	0.12	-	8	20.8	12.4
Site 4, Bailey, Texas
Ap	63.1	23.7	16.8	FSL	1.35	0.59	-	7	15.2	8.2
Bt1	5.24	24.3	23.3	SCL	1.29	0.86	-	7.2	20.8	12.9
Bt2	50.3	20.2	29.5	SCL	1.42	0.6	-	7.9	25.1	15.9
Bt3	51.8	17.4	30.8	SCL	1.46	0.4	-	8	23.4	14.7
Btk	34	23.7	42.3	C*	1.57	0.53	46	8	-	-
Site 6, Hale, Texas
Ap	58.7	22.5	18.8	SL	1.35	0.95	-	7.2	18.5	10.6
Bt1	45.5	25.5	29	CL	1.48	0.72	-	7.3	25.9	17.7*
Bt2	44.3	24.4	31.3	CL	1.44	0.33	-	7.8	25.2	17.4*
Bt3	48.1	26.9	25	SCL	1.58	0.15	-	7.8	21	12.9
Btk	37.2	24.8	38	CL*	1.67	0.15	35	8.1	-	-
Site 7, Lubbock, Texas
Ap	53.8	28.7	17.5	SL	1.35	0.89	-	7.1	17.3	9.6
Bt1	4.62	27	26.8	SCL	1.55	0.99	-	7.3	26.2	18.0*
Bt2	39.3	24.7	36	CL	1.53	0.78	-	7.3	31.7	22.9
Bt3	43.7	20.5	35.8	CL	1.54	0.42	-	7.6	29.8	20.4
Btk	35.4	25.3	39.3	CL*	1.62	0.2	38	8	-	-
Site 8, Lubbock, Texas
Ap	67.3	10.9	21.8	SCL	1.35	0.74	-	7.3	19.6	11.8
Bt1	54.5	15	30.5	SCL	1.64	0.88	-	7.4	29.1	21.2
Bt2	52.3	16.9	30.8	SCL	1.57	0.73	-	7.5	28	21
Bt3	55.1	13.9	31	SCL	1.46	0.4	-	7.6	25.5	15.9
Btk	37.3	25.7	37	CL*	1.64	0.22	55	7.9	-	-
Site 9, Dawson, Texas
Ap	64.3	18.9	16.8	FSL	1.35	0.71	-	7.4	15.8	8.6
Bt1	61.3	18.7	20	SCL	1.55	0.84	-	7.5	20.5	13.2*
Bt2	46.2	22	31.8	SCL	1.62	0.68	-	7.6	28.9	20.8*
Bt3	4.31	22.9	34	CL	1.53	0.4	-	7.6	28.3	20.3*
Bt4	45.5	22.7	31.8	SCL	1.55	0.22	-	7.7	26	18.6*
Btk	25.1	27.4	47.5	C*	1.57	0.26	38	7.9	-	-
Site 10, Howard, Texas
Ap	67.3	14.7	18	FSL	1.35	0.68	-	7.6	16.5	9.3
Bt1	57.3	17.4	25.3	SCL	1.57	0.67	-	7.4	23.7	16.2*
Bt2	61.2	16.5	22.3	SCL	1.76	0.65	-	7.4	23	16.4*
Bt3	58.2	10	31.8	SCL	1.59	0.6	-	7.5	28.2	17.6
Bt4	58.3	7.03	34.5	SCL	1.51	0.51	-	7.7	29.1	20.7
Btk	40	19	41	C*	1.52	0.24	44	8	-	-
Site 11, Hockley, Texas
Ap	65.3	17.9	16.8	FSL	1.35	0.71	-	7.6	15.8	8.6
Bt1	57.1	16.1	26.8	SCL	1.21	0.66	-	7.4	21.7	13.1*
Bt2	56.1	17.1	26.8	SCL	1.87	0.41	-	7.4	24	19.6*
Bt3	58.3	12.9	28.8	SCL	1.54	0.2	-	7.5	23.6	16.5*
Btk	49.9	14.6	35.5	SC*	1.65	0.2	47	7.7	-	-
Site 12, Lynn, Texas
Ap	62.3	11.4	26.3	SCL	1.35	0.8	-	7.3	23.2	14.8
Bt1	57.5	14.2	28.3	SCL	1.55	0.84	-	7.4	26.6	18.4*
Bt2	51.6	14.9	33.5	SCL	1.58	0.6	-	7.5	29.4	21.2*
Bt3	49	19	32	SCL	1.48	0.31	-	7.5	26	18.2*
Btk	44	19.2	36.8	CL*	1.59	0.2	33	7.9	-

¹Water contents at the -0.033 MPa were calculated by Equation 1, Table 7 of Unger (1975) and water contents at -1.5 MPa marked with an asterisk (*) were calculated by Equation 2. ²Bulk density of the Ap horizon was estimated from values obtained from other studies because this horizon was the loosened tillage layer and core sampling was not possible when the samples were obtained.
Textural abbreviations: C=Clay; CL=Clay Loam; FSL=Fine Sandy Loam; SCL = Sandy Clay Loam

Table 4. Amount and rate of water infiltration and related data for Acuff soils from Unger et al. (1993).
Site and County		Cumulative
Bulk Density		Infiltration at		-------------- Infiltration Rate at ---------------
LTZ¹	Subsoil	10	20	10	30	1	2	5	10	20
		min	min	min	min	hr	hr	hr	hr	hr

---------g cm^-3 --------		----in----		-----------------------in hr^-1------------------------
Site 1, Parmer, Texas
1.15	1.49	1.81	9.75	2.91	1.32	1.11	0.91	0.61	0.36	0.24
1.15	1.45	1.92	11.28	2.95	1.68	1.11	0.72	0.62	0.35	0.25
1.15	1.51	2.04	10.15	2.64	1.92	0.85	0.81	0.51	0.36	0.24
1.77	1.58	0.48	1.49	1.44	0.24	0.12	0.08	0.03	0.03	0.03
1.78	1.56	1.21	1.81	1.44	0.18	0.08	0.05	0.02	0.02	0.02
Site 2, Castro, Texas
1.55	1.46	1.81	5.41	3.25	0.25	0.25	0.25	0.21	0.21	0.16
1.57	1.49	1.63	5.16	2.52	0.36	0.31	0.25	0.25	0.21	0.14
1.3	1.49	0.84	9.12	2.88	1.22	0.61	0.54	0.49	0.43	0.27
1.65	1.65	0.95	3.31	1.35	0.45	0.36	0.31	0.18	0.11	0.06
1.69	1.64	0.84	2.16	1.21	0.12	0.12	0.12	0.11	0.08	0.04
1.11	1.5	0.96	10.13	2.38	1.44	1.14	0.91	0.58	0.45	0.21
Site 3, Lamb, Texas
1.76	1.59	0.81	3.05	2.71	0.72	0.25	0.11	0.11	0.08	0.08
1.81	1.59	0.96	2.28	2.91	0.21	0.18	0.08	0.05	0.05	0.05
164	1.59	0.82	6.69	2.75	0.61	0.36	0.24	0.18	0.16	0.14
1.11	1.36	1.51	19.12	5.76	2.52	1.94	1.25	0.96	0.81	0.75
1.11	1.35	2.41	21.36	8.64	2.16	1.44	1.11	0.96	0.96	0.91
1.11	1.35	2.41	24.11	7.21	2.16	1.72	1.21	1.05	0.96	0.96
Site 4, Bailey, Texas
1.1	1.3	1.68	23.31	5.76	1.44	1.21	1.21	1.21	1.11	0.95
1.1	1.42	2.41	16.68	8.64	1.21	0.72	0.72	0.72	0.72	0.72
1.77	1.59	1.41	2.59	4.32	0.11	0.11	0.11	0.09	0.06	0.03
1.69	1.59	2.04	5.32	6.48	0.51	0.21	0.21	0.18	0.18	0.1
1.69	1.59	1.81	4.95	5.18	0.38	0.24	0.16	0.16	0.12	0.1
Site 6, Hale, Texas
1.68	1.59	0.31	3.61	1.31	0.58	0.43	0.36	0.18	0.18	0.12
1.76	1.59	0.05	1.56	0.18	0.18	0.18	0.18	0.14	0.11	0.06
1.52	1.55	0.72	5.81	2.16	0.86	0.62	0.48	0.29	0.24	0.18
1.11	1.55	2.45	16.76	4.88	1.31	1.08	0.99	0.62	0.59	0.51
1.11	1.55	2.18	11.02	4.08	0.77	0.51	0.45	0.45	0.45	0.45
Site 7, Lubbock, Texas
1.81	1.61	0.61	2.88	2.16	0.24	0.14	0.11	0.11	0.08	0.04
1.82	1.59	0.05	1.56	0.31	0.21	0.16	0.16	0.12	0.09	0.04
1.25	1.54	2.16	11.69	8.64	1.8	1.15	0.79	0.45	0.35	0.35
1.25	1.54	2.31	11.4	5.04	1.44	1.01	0.72	0.46	0.43	0.34
1.11	1.45	2.68	16.48	8.21	2.23	1.58	0.91	0.75	0.61	0.51
1.25	1.57	2.21	9.28	4.32	1.58	1.01	0.61	0.31	0.25	0.25
Site 8, Lubbock, Texas
1.69	1.59	1.48	4.42	5.62	0.46	0.34	0.22	0.22	0.11	0.08
1.68	1.59	1.25	5.22	4.32	0.48	0.38	0.24	0.18	0.18	0.09
1.62	1.59	1.44	6.72	4.32	0.52	0.48	0.36	0.24	0.22	0.22
Site 9, Dawson, Texas
1.1	1.4	1.92	25.01	5.04	2.9	2.16	1.44	1.32	0.94	0.94
1.1	1.42	2.88	15.6	6.48	3.6	2.6	1.58	0.6	0.36	0.36
1.62	1.55	0.91	9.96	5.46	1.44	0.72	0.62	0.55	0.38	0.3
Site 10, Howard, Texas
1.61	1.55	1.92	7.97	4.32	0.72	0.38	0.31	0.24	0.22	0.22
1.69	1.55	3.07	5.93	2.88	0.6	0.26	0.18	0.12	0.12	0.1
1.12	1.5	2.4	11.16	2.88	0.72	0.48	0.48	0.42	0.42	0.42
1.12	1.41	2.4	23.09	5.4	1.92	1.32	1.08	0.96	0.96	0.96
1.12	1.4	3.96	18.96	4.32	1.44	1.08	0.72	0.72	0.72	0.72
Site 11, Hockley, Texas
1.68	1.6	1.44	5.52	4.3	1.1	0.72	0.45	0.18	0.15	0.1
1.56	1.6	1.21	9.48	4.4	1.44	1.08	0.84	0.48	0.3	0.24
1.68	1.6	1.31	7.01	5.04	1.08	0.72	0.48	0.3	0.24	0.14
1.61	1.6	1.44	6.24	4.08	1.15	0.62	0.24	0.24	0.24	0.2
1.58	1.6	1.56	7.21	4.25	1.45	0.61	0.28	0.24	0.22	0.22
Site 12, Lynn, Texas
1.15	1.61	1.36	6.1	3.85	1.15	0.36	0.24	0.22	0.19	0.19
1.15	1.66	1.25	5.9	3.74	1.71	0.48	0.3	0.24	0.18	0.16
1.11	1.52	2.61	11.82	7.65	1.92	1.1	0.75	0.48	0.42	0.36
1.12	1.55	2.41	10.72	5.04	1.36	0.72	0.43	0.36	0.36	0.36
1.1	1.25	1.98	27.89	2.88	2.52	1.56	1.32	1.21	1.21	1.19
1.1	1.38	1.98	17.62	2.88	2.13	1.44	0.91	0.72	0.68	0.65
1.1	1.45	2.38	12.25	2.95	1.55	0.72	0.48	0.48	0.45	0.41

¹Lower tillage zone

Table 5. Water retention data for the Amarillo soil series.
	---------------------- Soil Water Content (% by Volume) ---------------------
Horizon	-0.033MPa	-0.1MPa	-1.5 MPa

Native range (Bryant, 1977¹ )
A1	13.40	11.60	6.00
B21t	15.80	13.60	8.40
B22t	19.20	16.60	10.10
Irrigated (Bryant,1977)
Ap1	8.00	6.70	3.60
Ap2	9.40	0.00	4.10
B21t	20.80	17.50	10.40
Dryland (Bryant,1977)
Ap1	12.10	10.50	5.70
Ap2	12.70	11.30	6.30
B21t	21.80	19.10	11.60
Irrigated (Paetzold,1972)
Ap	13.40	11.40	6.87
B21t	15.80	12.80	9.73
B22t	17.80	14.20	10.40
B3tca	19.10	16.30	10.80

¹Bryant reported mean infiltration rates for the native, irrigated, and dryland soils are 3.79, 4.29, and 2.29 inches per hour, respectively.

Table 6. Characteristics of Pullman Series at study sites from Unger and Pringle, 1981.
								Water Content
Site and County				Textural			Bulk	at Potential of
Horizon	Sand	Silt	Clay	Class	O.M.	pH	Density	-0.033 MPa	-1.5 MPa

	-----------%-----------				%		g cm^-3	-----% by volume-----
Site 1, Carson, Texas
Ap	18.0	49.0	33.0	SiCL	2.52	6.58	1.26¹	28.5²	18.7³
B21t	12.0	41.0	47.0	SiC	1.41	6.87	1.48	28.6	18.9
B22t	12.0	40.2	47.8	SiC	0.94	7.31	1.62	25.8	17.9
B23t	12.0	40.3	47.7	SiC	0.84	7.45	1.56	26.1	16.5
B24t	12.0	42.1	45.9	SiC	0.62	7.57	1.57	24.5	15.0
Site 2, Armstrong, Texas
Ap	24.0	47.0	29.0	CL	2.01	7.43	1.26¹	24.2²	15.4³
B21t	18.0	33.0	49.0	C	1.42	7.35	1.48	29.7	20.6
B22t	16.5	35.7	47.8	C	1.07	7.54	1.56	26.9	18.8
B23t	19.3	34.7	46.0	C	0.83	7.79	1.62	24.7	16.7
B24t	25.0	31.5	43.5	C	0.53	7.65	1.65	23.7	16.0
Site 3, Randall, Texas
Ap	17.0	53.0	30.0	SiCL	2.06	6.70	1.26¹	25.0²	16.0³
B21t	13.0	38.8	48.2	C	1.29	6.77	1.48	28.8	18.5
B22t	13.0	40.0	47.0	SiC	0.95	7.24	1.60	26.7	18.1
B23t	15.0	40.8	44.2	SiC	0.76	7.58	1.58	24.8	15.7
B24t	19.3	37.2	43.5	C	0.39	7.65	1.65	24.4	16.7
Site 4, Swisher, Texas
Ap	33.0	37.0	30.0	CL	1.58	7.23	1.26¹	23.1²	14.8³
B21t	25.8	33.0	41.2	C	1.36	7.54	1.48	25.6	17.4
B22t	27.5	32.4	40.1	C	0.79	7.54	1.78	21.9	18.5
B23t	32.7	29.3	38.0	CL	0.54	7.73	1.44	21.6	15.1
B24t	32.0	27.5	40.5	C	0.37	7.84	1.38	22.9	15.1
Site 5, Castro, Texas
Ap	28.0	42.0	30.0	CL	2.25	6.93	1.26¹	25.7²	16.5³
B21t	28.0	38.0	34.0	CL	2.14	7.07	1.24	27.9	15.3
B22t	28.1	32.9	39.0	CL	1.46	7.14	1.52	24.5	20.5
B23t	25.0	32.0	43.0	C	0.98	7.40	1.60	24.0	17.9
B24t	31.5	29.0	39.5	C	0.80	7.60	1.46	23.8	15.3
Site 6, Deaf Smith, Texas
Ap	23.0	40.0	37.0	CL	1.59	7.23	1.26¹	27.1²	18.3³
B21t	21.1	35.7	43.2	C	1.14	6.95	1.49	25.7	17.5
B22t	23.0	33.4	43.6	C	0.78	7.39	1.58	26.0	17.4
B23t	27.1	31.8	41.1	C	0.47	7.49	1.63	23.3	16.6
B24t	27.1	31.8	41.1	C	0.37	7.49	1.63	23.3	16.6
Site 7, Floyd, Texas
Ap	33.0	39.0	28.0	CL	1.37	6.95	1.26¹	21.1²	13.3³
B21t	29.1	27.9	43.0	C	0.88	7.04	1.49	24.8	19.2
B22t	26.0	30.8	43.2	C	0.68	7.47	1.64	22.8	18.0
B23t	30.0	29.0	41.0	C	0.56	7.73	1.64	23.1	16.2

¹ Loosened tillage layer. Bulk density estimated from values obtained from earlier studies.
² Calculated by Equation 1, Table 7, of Unger (1975).
³ Calculated by Equation 2, Table 7, of Unger (1975).
Soil Texture Abbreviations: C=Clay; CL=Clay Loam; SiC=Silty Clay; SiCl=Silty Clay Loam.

Table 7. Amount and rate of water infiltration into Pullman soils from Unger and Pringle, 1981.
Site and County	Cumulative
	Infiltration at		-------------- Infiltration Rate at ---------------
	10	20	10	30	1	2	5	10	20
	min	min	min	min	hr	hr	hr	hr	hr

	---- in ----		----------------------- in hr^-1------------------------

1 Carson	0.80	4.71	1.17	0.45	0.36	0.31	0.17	0.17	0.13
2 Armstrong	1.16	4.72	0.90	0.43	0.40	0.31	0.29	0.07	0.11
3 Randall	1.23	4.12	1.02	0.60	0.68	0.47	0.17	0.11	0.05
4 Swisher	1.16	4.20	1.44	0.71	0.53	0.33	0.33	0.16	0.09
5 Castro	1.52	4.51	2.10	0.63	0.37	0.25	0.17	0.13	0.08
6 Deaf Smith	1.40	4.90	1.44	0.57	0.30	0.43	0.23	0.16	0.10
7 Floyd	1.64	3.18	2.10	0.67	0.29	0.26	0.14	0.06	0.04
Mean	1.27	4.33	1.45	0.58	0.42	0.34	0.21	0.12	0.09
Standard Deviation	0.28	0.58	0.48	0.11	0.14	0.08	0.07	0.04	0.03

Table 8. Characteristics of the Sherm soil at the study sites from Unger and Pringle, 1986.
								Water Content
Site and County				Textural	Organic		Bulk	at Potential
Horizon	Sand	Silt	Clay	Class	Matter	pH	Density	-0.033 MPa	-1.5MPa

	------------%------------				%		g cm^-3	-----% by volume-----
Site 1, Hartley, Texas
Ap	35.2	33.2	31.6	CL	1.45	7.75	1.26¹	29.5²	19.2
Bt1	23.6	32.8	43.6	C	0.93	7.65	1.53	37.9	22.8
Bt2	20.5	39.8	39.7	CL	0.63	7.60	1.62	34.4	20.6
Bt3	26.7	37.9	35.4	CL	0.39	7.60	1.63	30.1	19.9
Bt4	35.8	30.5	33.7	CL	0.23	7.50	1.51	27.1	17.4
Btk	29.9	40.9	29.2	CL	0.25	7.90	1.46	-	-
Site 2, Dallam, Texas
Ap	36.0	32.4	31.6	CL	1.75	7.70	1.26¹	31.1²	20.2
Bt1	32.8	29.3	37.9	CL	0.84	7.60	1.58	33.8	18.6
Bt2	43.9	25.4	30.7	CL	0.39	7.60	1.55	26.0	16.9
Bt3	46.0	27.6	26.4	CL	0.36	7.50	1.49	22.2	17.6
Ab	22.0	45.6	32.4	CL	0.45	7.70	1.51	27.2	19.3
Btb1	33.0	32.1	34.9	CL	0.34	7.70	1.64	29.6	19.0
Btb2	40.3	24.9	34.8	CL	0.23	7.90	1.69	-	-
Site 3, Moore, Texas
Ap	16.8	47.2	36.0	SiCL	2.17	7.90	1.26¹	36.4²	24.3
Bt1	12.0	41.3	46.7	SiC	1.13	7.80	1.41	40.2	22.4
Bt2	13.9	48.0	38.1	SiCL	0.56	7.80	1.51	31.9	20.5
Bt3	26.5	41.2	32.3	CL	0.30	7.70	1.58	27.0	21.5
Btk	18.2	56.2	25.1	SiCL	0.24	7.90	1.38	-	-
Site 4, Texas, Oklahoma
Ap	22.9	36.7	40.4	C	1.87	7.90	1.26¹	38.1²	26.1
Bt1	28.6	32.6	38.8	CL	1.07	7.90	1.50	34.9	25.1
Bt2	22.3	39.0	38.7	CL	0.56	7.90	1.60	33.1	24.5
Btb1	17.1	44.6	38.3	SiCl	0.38	7.90	1.58	31.7	23.5
Btb2	16.2	47.4	36.4	SiCL	0.34	7.90	1.60	-	-
Site 5, Sherman, Texas
Ap	34.4	32.4	33.2	CL	1.70	7.60	1.26¹	32.0²	21.0
Bt1	23.8	40.0	36.2	CL	0.86	7.80	1.48	31.8	20.9
Bt2	22.9	37.3	39.8	CL	0.46	7.90	1.56	33.1	24.3
Bt3	34.8	31.6	33.6	CL	0.32	7.90	1.57	27.9	19.6
Bt4	33.1	31.4	35.5	CL	0.32	7.90	1.47	28.5	16.0
Btk	26.8	33.2	40.0	C	0.16	8.00	1.57	-	-
Site 6, Moore, Texas
Ap	10.5	52.7	36.8	SiCL	1.94	7.90	1.26¹	40.7²	28.2
Bt1	9.9	46.6	43.5	SiC	1.06	8.00	1.54	33.1	24.3
Bt2	14.0	38.1	47.9	C	0.67	8.00	1.62	40.5	24.6
Bt3	13.5	41.8	44.7	SiC	0.35	8.00	1.38	34.5	22.2
Btk	16.8	47.5	35.7	SiCL	0.33	7.90	1.75	-	-
Site 7, Hansford, Texas
Ap	8.3	50.1	41.6	SiC	2.14	7.70	1.26¹	40.3²	27.7
Bt1	5.6	51.2	43.2	SiC	0.97	7.80	1.44	37.1	24.5
Bt2	5.8	53.9	40.3	SiC	0.61	7.90	1.53	33.9	22.8
Bt3	9.3	51.9	38.8	SiCL	0.54	7.90	1.39	31.3	21.7
Bt4	13.1	44.1	42.8	SiC	0.33	8.00	1.44	33.6	15.3
Btk	17.1	48.6	34.3	SiCL	0.22	8.00	1.77	-	-
Site 8, Hansford, Texas
Ap	8.8	54.6	36.6	SiCL	2.85	7.80	1.26¹	40.2²	26.9
Bt1	8.2	52.2	39.6	SiCL	1.22	7.90	1.47	36.0	25.6
Bt2	8.5	51.9	39.6	SiCL	0.80	7.90	1.59	34.9	23.9
Ab	19.0	44.1	36.9	SiCL	0.53	7.90	1.59	31.6	19.2
Btb1	19.7	45.8	34.5	SiCL	0.28	7.80	1.35	26.5	15.7
Btb2	18.6	47.9	33.5	SiCL	0.27	7.80	1.24	-	-
Site 9, Beaver, Oklahoma
Ap	11.9	56.5	31.6	SiCl	2.33	7.70	1.26¹	34.0²	22.1
Bt1	9.6	47.2	43.2	SiC	1.20	7.80	1.43	38.2	24.9
Bt2	7.7	49.1	43.2	SiC	0.65	7.80	1.54	36.3	24.6
Ab	8.4	53.2	38.4	SiCL	0.55	7.70	1.42	31.3	22.0
Btb1	8.9	52.1	39.0	SiCl	0.58	7.50	1.26	30.5	19.3
Btb2	13.1	46.9	40.0	SiC	0.48	7.30	1.14	-	-
Site 10, Ochiltree, Texas
Ap	9.3	61.0	29.7	SiCL	3.03	7.50	1.26¹	36.1²	23.1
Bt1	6.3	50.2	43.5	SiC	1.41	7.50	1.51	40.1	26.1
Bt2	4.9	51.5	43.6	SiC	0.89	7.70	1.62	38.5	26.9
Btb1	6.9	55.6	37.5	SiCL	0.68	7.70	1.44	31.5	21.3
Btb2	10.4	51.5	38.1	SiCL	0.57	7.70	1.39	-	-
Site 11, Dallam, Texas
Ap	3.7	31.9	30.8	CL	1.61	6.80	1.26¹	29.8²	19.7
Bt1	35.4	26.8	37.8	CL	0.70	7.40	1.49	32.2	22.2
Bt2	38.5	22.7	38.8	CL	0.31	7.60	1.45	30.7	20.4
Bt3	52.2	13.2	34.6	SiCL	0.19	7.80	1.60	28.3	23.0
Btk	51.1	14.5	34.4	SiCL	0.14	8.10	1.62	-	-

¹Bulk density of the Ap horizon was estimated from values obtained from other studies because this horizon was the loosened tillage layer and core sampling was not possible when the samples were obtained.
²Water contents at the -1/3-bar [-0.033MPa] matric potential were calculated by Equation 1, Table 7, of Unger (1975).
Texture abbreviations: C=Clay; CL= Clay loam; SiCL= Silty Clay Loam; SiC= Silty Clay.

Table 9. Amount and rate of water infiltration and related data from Sherm soils from Unger and Pringle, 1986.
Site and County		Cumulative Infiltration at			------------- Infiltration Rate at --------------
Bulk Density		10.00	12.00	20.00	10.00	30.00	1.00	2.00	5.00	12.00	20.00
Tilled Ap	Bt	min	hr	hr	min	min	hr	hr	hr	hr	hr

----- g cm^-3 -----		--------- in -------			---------------------- in hr^-1 -----------------------
Site 1, Hartley, Texas
1.69	1.61	0.75	2.19	2.57	1.80	0.39	0.24	0.18	0.09	0.04	0.04
1.44	1.52	0.95	4.08	5.76	2.90	0.60	0.30	0.25	0.25	0.20	0.20
1.62	1.52	1.00	4.34	5.11	2.88	0.85	0.65	0.40	0.25	0.12	0.09
Site 2, Dallam, Texas
1.63	1.43	0.85	3.07	3.43	2.04	0.60	0.25	0.25	0.15	0.06	0.04
1.21	1.35	1.47	8.67	10.80	4.32	1.50	0.83	0.70	0.60	0.35	0.27
Site 3, Moore, Texas
1.10	1.54	2.04	6.17	7.20	5.76	1.44	0.90	0.50	0.24	0.15	0.15
1.10	1.28	1.80	11.90	15.66	5.48	2.56	1.31	1.05	0.74	0.53	0.40
Site 4, Texas, Oklahoma
1.70	1.63	1.00	1.70	1.80	2.40	0.72	0.08	0.06	0.02	0.02	0.02
1.74	1.60	0.60	1.03	1.44	1.26	0.60	0.11	0.07	0.03	0.01	0.01
Site 5, Sherman, Texas
1.65	1.53	0.84	3.19	3.81	1.80	0.60	0.45	0.25	0.18	0.10	0.08
1.21	1.37	0.96	9.68	12.81	3.30	1.19	0.94	0.90	0.72	0.48	0.35
Site 6, Moore, Texas
1.10	1.41	1.00	9.77	11.88	4.32	1.60	1.40	1.08	0.74	0.36	0.25
1.71	1.55	0.38	1.25	1.41	0.72	0.16	0.11	0.07	0.05	0.03	0.02
1.57	1.50	1.20	4.08	4.68	2.88	1.08	1.00	0.45	0.16	0.08	0.08
1.10	1.43	1.68	12.22	14.11	6.48	3.60	2.52	1.19	0.64	0.33	0.28
Site 7, Hansford, Texas
1.55	1.51	1.00	4.15	5.14	2.88	0.66	0.54	0.36	0.24	0.12	0.12
1.76	1.56	0.95	1.20	1.44	1.40	0.04	0.04	0.03	0.02	0.02	0.02
Site 8, Hansford, Texas
1.64	1.49	1.65	4.19	4.64	2.88	0.96	0.48	0.16	0.09	0.07	0.06
1.48	1.53	1.17	6.30	7.53	3.24	1.17	1.06	0.70	0.36	0.16	0.14
1.10	1.49	1.78	8.84	10.56	8.22	1.91	1.43	0.81	0.43	0.24	0.22
Site 9, Beaver, Oklahoma
1.19	1.37	1.43	10.27	12.75	5.10	2.93	2.04	1.09	0.67	0.31	0.27
Site	10,	Ochiltree,	Texas
1.52	1.41	1.32	7.27	8.28	5.76	2.02	1.44	0.77	0.43	0.16	0.13
1.65	1.54	0.60	3.24	3.84	1.20	0.50	0.36	0.18	0.12	0.08	0.06.
Site 11, Dallam, Texas
1.65	1.54	0.60	3.24	3.84	1.20	0.50	0.36	0.18	0.12	0.08	0.06
1.41	1.54	0.80	4.80	6.00	1.44	0.60	0.48	0.30	0.25	0.18	0.12

Table 10. Water retention curves for several Randall clay soils.
	Soil Water Content (% by Volume)
Horizon	-0.03 MPa	-0.1 MPa	-1.5 MPa

	(Paetzold, 1972)
A11	30.07	23.45	15.98
A12	24.85	20.73	14.2
AC1	24.63	19.15	15.76
AC2	20.29	17.23	10.68
	(Layla, 1982)
Ap1	31.0	30.1	19.7

Table 11. Short and long-time infiltration rates in three playa lakes.
Infiltration Component	Infiltration Rate (in hr^-1)
	Initial	Long-term

	High elevation
Range of values	2160-33.6	2390-0.024
Arithmetic mean	353	17.5
Geometric mean	17.8	6.24
	Intermediate elevation
Range of values	5976-24	52.8-0.010
Arithmetic mean	355	13.2
Geometric mean	20.5	4.37
	Low elevation
Range of values	1008-38.4	40.8-0.696
Arithmetic mean	247	11.7
Geometric mean	20.5	4.73