IDENTIFIERS
Current Taxon Name (Soil Name):
Grundy
OSD
Series Extent
User Site ID:
S1985IA087042
User Pedon ID:
85IA0870042
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
SSL
Lab Pedon # -
86P0368
NCSS Pedon Lab Data NASIS Record ID -
58173
Print Date:
4/27/2025
LOCATION
Location In Web Soil Survey
AOI is roughly a square mile and pedon is marked in the center.
Location in SoilWeb
Location in Google Maps
Std. Latitude:
40.8227768
Std. Longitude:
-91.6038895
Datum:
WGS84
Township:
70N
Range:
7W
Section:
36
PLSS Details:
2100 feet S and 358 feet W of the NE corner
State:
Iowa
County:
IA087—Henry
MLRA:
109—Iowa and Missouri Heavy Till Plain
Regional Office:
NC—North Central
MLRA Soil Survey Area:
NC-WAV—Waverly, Iowa
Non-MLRA Soil Survey Area:
IA087—Henry County, Iowa
PEDON
Describers Name:
J. A. Lucassen
Current Taxonomic Class:
Fine, smectitic, mesic Mollic Hapludalfs
Current Taxon Kind:
series
Pedon Purpose:
full pedon description
Pedon Record Orgin:
Converted from SSL-CMS data
Pedon #:
4
Correlated Information:
Soil Name -
Grundy
Classificaton Date -
7/11/2007
Moisture Class -
udic
Sampled As Information:
Soil Name -
Grundy
Taxonomic Class -
Fine, montmorillonitic, mesic Aquic Argiudoll
Taxon Kind -
series
Classificaton Date -
10/1/1985
Moisture Class -
udic
Moisture SUBClass -
aquic
Dynamic Soil Properties:
Erosion Class -
2
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Parent Material:
loess
Landscape:
upland
Drainage Class:
somewhat poorly
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
10/1/1985 (actual site observation date)
Surface Cover Properties:
Site Obs. Cover Kind 1 -
crop cover
Pedoderm Loose Cover Indicator -
no
Drained? -
no
Bedded Soil? -
no
Forest Plantation? -
no
Site Erosion Accelerated:
water erosion
Setting and Climate
Slope
Slope Length USLE
Upslope Length
Elev.
Corr. Elev
Aspect
MAP
REAP
FFD
MAAT
MSAT
MWAT
MAST
MSST
MWST
MFFP
PE Index
Climate Station ID
Climate Station Name
Climate Station Type
%
m
degrees
mm
mm
C
mm
4
—
—
—
—
225
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—
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—
1Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark gray (10YR 3/1) interior silt loam; weak fine granular structure; friable; 0.5 fine roots; fragments; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 86P02184. Numerous streaks and pockets of (10YR 5/2).; few fine roots
1Bt1—20 to 38 centimeters (7.9 to 15.0 inches); grayish brown (10YR 5/2) interior silty clay; 1 percent brown (10YR 5/3) fine faint mottles; moderate very fine and fine subangular blocky structure; firm; 0.5 fine roots; faint , moist, clay films; fragments; moderately acid, pH 5.6, hellige-truog; gradual smooth boundary. Lab sample # 86P02185. Few dark mixings in upper part.; few fine roots; few fine faint 10YR53 mottles; discontinuous - phpvsfiid 220324; discontinuous - phpvsfiid 220324
1Bt2—38 to 53 centimeters (15.0 to 20.9 inches); grayish brown (10YR 5/2) interior silty clay; 1 percent yellowish brown (10YR 5/4) fine distinct mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; , moist, clay films; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 86P02186. few fine roots; few fine distinct 10YR54 mottles; continuous - phpvsfiid 220325; continuous - phpvsfiid 220325
1Bt3—53 to 69 centimeters (20.9 to 27.2 inches); grayish brown (10YR 5/2) interior silty clay; 11 percent yellowish brown (10YR 5/4) fine distinct and 11 percent strong brown (7.5YR 5/6) fine prominent mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; , moist, clay films; 1 percent fine dark concretions; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 86P02187. few fine dark concretions concentrations; few fine roots; common fine distinct 10YR54 mottles; common fine prominent 7.5YR56 mottles; continuous - phpvsfiid 220326; continuous - phpvsfiid 220326
1Bt4—69 to 86 centimeters (27.2 to 33.9 inches); grayish brown (10YR 5/2) interior and light brownish gray (10YR 6/2) interior silty clay; 11 percent yellowish brown (10YR 5/4) fine distinct and 11 percent yellowish brown (10YR 5/6) fine distinct and 11 percent strong brown (7.5YR 5/6) fine prominent mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; , moist, clay films; 1 percent fine dark concretions; fragments; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # 86P02188. few fine dark concretions concentrations; few fine roots; common fine distinct 10YR54 mottles; common fine distinct 10YR56 mottles; common fine prominent 7.5YR56 mottles; discontinuous - phpvsfiid 220327; discontinuous - phpvsfiid 220327
1Bt5—86 to 104 centimeters (33.9 to 40.9 inches); grayish brown (10YR 5/2) interior and light brownish gray (10YR 6/2) interior silty clay; 11 percent yellowish brown (10YR 5/6) fine prominent and 11 percent strong brown (7.5YR 5/6) fine prominent mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; , moist, clay films; 1 percent fine dark concretions; fragments; neutral, pH 7.2, hellige-truog; gradual smooth boundary. Lab sample # 86P02189. few fine dark concretions concentrations; few fine roots; common fine prominent 10YR56 mottles; common fine prominent 7.5YR56 mottles; discontinuous - phpvsfiid 220328; discontinuous - phpvsfiid 220328
1BC—104 to 152 centimeters (40.9 to 59.8 inches); grayish brown (10YR 5/2) interior and light brownish gray (10YR 6/2) interior silty clay loam; 11 percent yellowish brown (10YR 5/6) fine prominent and 11 percent strong brown (7.5YR 5/6) fine prominent mottles; weak medium subangular blocky structure; firm; 0.5 fine roots; 1 percent fine dark concretions; fragments; neutral, pH 7.2, hellige-truog. few fine dark concretions concentrations; few fine roots; common fine prominent 10YR56 mottles; common fine prominent 7.5YR56 mottles