Order 1 Mapping Standards - USDA 1 Mapping Standards By Henry R. Mount Soil Scientist, National Soil...

Order 1 MappingStandards

By

Henry R. MountSoil Scientist, National Soil Survey

Center, Lincoln, NE

Presented at Southern Regional Cooperative Soil Survey ConferenceSouthern Regional Cooperative Soil Survey Conference - Tybee Is., GA

Order 1 Standards

?Issued on April 16, 1999 by Horace Smith. Review draft went to all NRCS State Conservationists and Regional Conservationists. Copies were also sent to all State Soil Scientists, MLRA Office Leaders, and NCSS Soil Scientists.?Will be a part of the NSSH - Part 655.04.?Took 4 years to clear hurdles.

Definition of Order 1 Surveys

?Soil maps produced for intensive land uses that require detailed information about soils.?This could be research areas for

universities, state lands, and LTER areas.?Can only enter into mapping on private

lands where NRCS soil scientists do not conflict with consulting interests.

Discussion Points

?Order 1 surveys normally concentrate on a single purpose.?They provide more reliable and detailed

information than Order 2 surveys.?They provide well-documented data for

customers.

Order 1 Work Plan

?Map scale.?Mapping Base.?Field Procedures.?Identification of map units.?Other features as deemed necessary.

Survey Area Size

?Generally less than 300 acres.?An experienced soil scientist can map 80

acres in a day for precision farming activities.?Where detailed grid mapping is required,

40 acres is a good target for production.

Order 1 Map Scale

?Between 1:1,200 to 1:12,000.?Defined by intended users.?Must conform to smallest management

unit.

Map Unit Kind

?Target is consociations for precision farming.?Undifferentiated groups may reflect reality

for some surveys (Panola Mountain in Georgia).?Documentation is the key to variability

and naming map units.

Placement of Soil Lines

?Setting precise standards is not possible.?Grid mapping with 130-ft intervals helps

to place boundaries between map units with similar surface features.?A contour map with a 1- to 2-ft interval

map be required for sloping sites.

Order 1 Documentation

?Either transecting or?*Grid information.?Primary properties could include 1)

thickness of the surface horizon, 2) depth to an important feature, e.g., redox features, 3) slope, 4) erosion, 5) percent clay in subsoil.?All points should be georeferenced.

Order 1 Results

?Soil map.?Legend of map symbols, names, and

narrative descriptions.?Mapper’s Names, Date of survey, and

map scale.

Order 1 Correlation

?Optional.

Product Delivery

?Electronic if possible.?Soil lines are digitized.?Can be posted on an ftp server.

Official Status

?An order 1 soil survey is a supplement to the “official” soil survey and not a replacement.?Data and maps from the order 1 soil

survey map be published in conjunction with research.

0.1 0 0.1 0.2 Miles

Order 1 Map152154A154B171B171B2221B233056B56B2

N

Electronic Examples ofOrder 1 Soil Survey Maps

100 0 100 200 300 Meters

200 0 200 Meters

80 0 80 160 Meters

Msea.shp12344E56

Order 1 Map107138B138B2138C138C227B50755662C62C2640C2655828B828C828C295

Order 1 Map1C21C41D21D31D41E21E42C52D54C24C34C44D24D44E24E34E44E55C36C56D46D56E4

Illinois Missouri

IowaPuerto Rico

Note:Soil maps from Illinois, Missouri,and Puerto Rico by NRCS Soil Scientists.Soil map in Iowa completed bypersonnel at Iowa State University. Map by Hank.

Questions for Discussion

?Should Order 1 Soil Survey attribute data be a part of NASIS??What is the best way to attain electronic

products??Are DOQs needed for Order 1 surveys??Is differential GPS needed for point data?

USDA - NRCS - Soil Survey Division

USDA - NRCS - Soil Survey Division

?The USDA prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status.