Major Land Resource Area 053A
Northern Dark Brown Glaciated Plains
Accessed: 12/30/2024
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-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils with an abrupt root or water restrictive clay layer (evidenced by columnar structure), present within 10” (25 cm) of soil surface
- Greater than 4" (10 cm) to 10" (25cm) of surface over clay layer (evidenced by columnar structure)
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils deep to very deep [ ≥ 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soil skeletal within 20" (50 cm) of the surface [ ≥ 35% rock fragments within 20" of the surface]
- Soil predominantly sandy-skeletal in the surface 20 inches (50cm)
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-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Soils containing BOTH a mollic epipedon and an argillic horizon - go to 16
- 16a. Strongly or violently effervescent in surface mineral 5” (12 cm), lime conc. increasing with depth.
- Slope ≥ 15%
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils deep to very deep [ ≥ 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soil not skeletal within 20" (50 cm) of the surface [ < 35% rock fragments in the surface 20”]
- Coarse loamy or finer textural family in surface mineral 4" (10 cm)
- Fine loamy, fine silty or finer textural family in surface mineral 4" (10 cm)
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Strongly or violently effervescent in surface mineral 5” (12 cm), lime conc. increasing with depth.
- Slope ≥ 15%
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Soils containing BOTH a mollic epipedon and an argillic horizon - go to 16
- 16a. Strongly or violently effervescent in surface mineral 5” (12 cm), lime conc. increasing with depth.
- Slope < 15%
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Soils containing BOTH a mollic epipedon and an argillic horizon - go to 16
- Not strongly or violently effervescent within surface mineral 5" (12 cm)
- Slope < 15%
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils deep to very deep [ ≥ 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soil not skeletal within 20" (50 cm) of the surface [ < 35% rock fragments in the surface 20”]
- Coarse loamy or finer textural family in surface mineral 4" (10 cm)
- Fine loamy, fine silty or finer textural family in surface mineral 4" (10 cm)
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Not strongly or violently effervescent within surface mineral 5" (12 cm)
- Slope < 15%
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Soils containing BOTH a mollic epipedon and an argillic horizon - go to 16
- Not strongly or violently effervescent within surface mineral 5" (12 cm)
- Slope ≥ 15%
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils deep to very deep [ ≥ 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soil not skeletal within 20" (50 cm) of the surface [ < 35% rock fragments in the surface 20”]
- Coarse loamy or finer textural family in surface mineral 4" (10 cm)
- Fine loamy, fine silty or finer textural family in surface mineral 4" (10 cm)
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Not strongly or violently effervescent within surface mineral 5" (12 cm)
- Slope ≥ 15%
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
- Site is located inside the floodplain
- Site dominated by herbaceous vegetation
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
- Site is located inside the floodplain
- Site Dominated by woody vegetation
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
- Site is located outside of the floodplain
- Herbaceous species and/or sagebrush dominate site; Typically broad, U-shaped swales and coulees
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is a closed depression with run in
- Site does not receive water from groundwater discharge - typically Nonsaline and Nonsodic (EC < 4 and SAR < 13) - Recharge Closed Depression (CdR)
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from groundwater. Water table ≤ 40 inches (100cm)
- Seasonal high water table < 24" (60 cm)
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil saline (EC ≥ 4 ) and/or sodic (SAR ≥ 13) within surface 20” (50 cm)
-
-
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils with an abrupt root or water restrictive clay layer (evidenced by columnar structure), present within 10” (25 cm) of soil surface
- 0"- 4” (0-10 cm) of surface over clay layer (evidenced by columnar structure)
- 1" (2.5 cm) or less of surface over clay layer (evidenced by columnar structure)
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from groundwater. Water table ≤ 40 inches (100cm)
- Seasonal high water table 24" to 40" (60-102 cm)
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
- Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
- Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
- Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
- Soils lacking either a mollic epipedon, an argillic horizon, or both
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soils with an abrupt root or water restrictive clay layer (evidenced by columnar structure), present within 10” (25 cm) of soil surface
- 0"- 4” (0-10 cm) of surface over clay layer (evidenced by columnar structure)
- Greater than 1" (2.5 cm) to 4" (10cm) of surface over clay layer (evidenced by columnar structure)
-
-
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is a closed depression with run in
- Site receives water from groundwater discharge - typically Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) - Discharge Closed Depression (CdD)
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from groundwater. Water table ≤ 40 inches (100cm)
- Seasonal high water table 24" to 40" (60-102 cm)
- Soil Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) within surface 4" (10 cm)
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
- Soil Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) within surface 4" (10 cm)
-
i
Key Characteristics
- Site Receives additional moisture either from groundwater or from surface water
- Site is on drainageways, floodplains, swales, or coulees
- Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
- Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
- Site is located outside of the floodplain
- Woody species (chokecherry, serviceberry, green ash) dominate site; Typically steep, V-shaped swales & coulees
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope ≥15%
- Clay content is < 32% (ribbon < 2” long) in surface mineral 4”
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope < 15%
- Site not as above
- Clay content is < 32% in surface mineral 4”
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope < 15%
- Site not as above
- Clay content is > 32% in surface mineral 4” of mineral soil (ribbon > 2” long)
- Soil 32% to 45% clay within surface mineral 4”
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope < 15%
- Coarse sandy loam to fine sandy loam texture within surface mineral 4”
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope ≥15%
- Clay content is > 32% (ribbon > 2” long) in surface mineral 4”
-
i
Key Characteristics
- Site receives additional effective moisture
- Site not as above
- Seasonal high water table ≥ 40” from ground surface; site regularly receives more than normal soil moisture because of run-in or stream overflow
-
i
Key Characteristics
- Site receives additional effective moisture
- Site not as above
- Seasonal high water table < 40” from ground surface
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soil saline or saline-sodic within surface 20” or soils with natric or relic natric horizons
- No columnar structure; site dominated by salt tolerant plants
-
i
Key Characteristics
- Site receives additional effective moisture
- Soil saline (EC> 4 within surface 4”) and water table > 40”
- Seasonal high water table≥ 40” from ground surface; salt tolerant plants dominate site; site regularly receives more than normal soil moisture because of run-in or stream overflow
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
- Slope < 15%
- Site not as above
- Clay content is > 32% in surface mineral 4” of mineral soil (ribbon > 2” long)
- Soil > 45% clay within surface mineral 2”
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Soil saline or saline-sodic within surface 20” or soils with natric or relic natric horizons
- Columnar structure present, abrupt root or water restrictive clay layer present within 8” of soil surface
-
i
Key Characteristics
- Site does not receive additional effective moisture
- Site not as above
- Soils shallow to very shallow (< 20” deep to bedrock, lithic, or paralithic root restrictive layer)
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Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.
Ecological site keys
MLRA 53 Key Determination
I.
2005 era legacy ESDs with plant tables and reference worksheets
... Key 2 – MLRA 53X Legacy Site Description Key
II.
Provisional LRU ES level developed concept descriptions.
... Key 3 – Provisional LRU level ESD Key
MLRA 53X Legacy Site Description Key
I.
Site receives additional effective moisture
A.
Soil saline (EC> 4 within surface 4”) and water table > 40”
1
Seasonal high water table≥ 40” from ground surface; salt tolerant plants dominate site; site regularly receives more than normal soil moisture because of run-in or stream overflow
... R053AE072MT – Saline Overflow (Sov) (Legacy) RRU 53AE
B.
Site not as above
2
Seasonal high water table < 40” from ground surface
... R053AE070MT – Subirrigated (Sb) (Legacy) RRU 53AE
1
Seasonal high water table ≥ 40” from ground surface; site regularly receives more than normal soil moisture because of run-in or stream overflow
... R053AE067MT – Overflow (Ov) (Legacy) RRU 53AE
II.
Site does not receive additional effective moisture
A.
Soil saline or saline-sodic within surface 20” or soils with natric or relic natric horizons
1
No columnar structure; site dominated by salt tolerant plants
... R053AE071MT – Saline Upland (SU) (Legacy) RRU 53AE
2
Columnar structure present, abrupt root or water restrictive clay layer present within 8” of soil surface
... R053AE074MT – Claypan (Cp) (Legacy) RRU 53AE
B.
Site not as above
2
Soils moderately deep, deep, or very deep (≥ 20” deep to bedrock, lithic, or paralithic root restrictive layer)
i.
Slope < 15%
a.
Coarse sandy loam to fine sandy loam texture within surface mineral 4”
... R053AE062MT – Sandy (Sy) (Legacy) RRU 53AE
b.
Site not as above
1)
Clay content is > 32% in surface mineral 4” of mineral soil (ribbon > 2” long)
ii.
Slope ≥15%
a.
Clay content is > 32% (ribbon > 2” long) in surface mineral 4”
... R053AE065MT – Clayey Steep (Cystp) (Legacy) RRU 53AE
b.
Clay content is < 32% (ribbon < 2” long) in surface mineral 4”
... R053AE058MT – Loamy Steep (Lostp) (Legacy) RRU 53AE
1
Soils shallow to very shallow (< 20” deep to bedrock, lithic, or paralithic root restrictive layer)
... R053AE078MT – Shallow Clay (Swc) (Legacy) RRU 53AE
Provisional LRU level ESD Key
A.
Site Receives additional moisture either from groundwater or from surface water
1a.
Site is a closed depression with run in
2a.
Site receives water from groundwater discharge - typically Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) - Discharge Closed Depression (CdD)
... FX053A99X705 – Discharge Closed Depression (CdD)
2b.
Site does not receive water from groundwater discharge - typically Nonsaline and Nonsodic (EC < 4 and SAR < 13) - Recharge Closed Depression (CdR)
... FX053A99X071 – Recharge Closed Depression (CdR)
1b.
Site is on drainageways, floodplains, swales, or coulees
3a.
Receives additional moisture from groundwater. Water table ≤ 40 inches (100cm)
4b.
Seasonal high water table 24" to 40" (60-102 cm)
5a.
Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
... FX053A99X150 – Subirrigated (Sb)
5b.
Soil Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) within surface 4" (10 cm)
... FX053A99X713 – Saline Lowland (SLL)
3b.
Receives additional moisture from surface water. Water table absent or, if present, > 40 inches (100 cm)
6a.
Soil Saline (EC ≥ 4 ) and/or Sodic (SAR ≥ 13) within surface 4" (10 cm)
... FX053A99X713 – Saline Lowland (SLL)
6b.
Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 4" (10 cm)]
7a.
Site is located outside of the floodplain
8a.
Herbaceous species and/or sagebrush dominate site; Typically broad, U-shaped swales and coulees
... FX053A99X062 – Swale (Se)
8b.
Woody species (chokecherry, serviceberry, green ash) dominate site; Typically steep, V-shaped swales & coulees
... FX053A99X756 – Woody Draw (WD)
7b.
Site is located inside the floodplain
B.
Site does not receive additional effective moisture
1a.
Soils with an abrupt root or water restrictive clay layer (evidenced by columnar structure), present within 10” (25 cm) of soil surface
2a.
0"- 4” (0-10 cm) of surface over clay layer (evidenced by columnar structure)
3a.
1" (2.5 cm) or less of surface over clay layer (evidenced by columnar structure)
... FX053A99X145 – Panspot (Pn)
3b.
Greater than 1" (2.5 cm) to 4" (10cm) of surface over clay layer (evidenced by columnar structure)
... FX053A99X165 – Thin Claypan (TCp)
2b.
Greater than 4" (10 cm) to 10" (25cm) of surface over clay layer (evidenced by columnar structure)
... FX053A99X006 – Claypan (Cp)
1b.
Soils without a restrictive clay layer (evidenced by columnar structure) within 10" (25 cm) of the soil surface
4a.
Soil saline (EC ≥ 4 ) and/or sodic (SAR ≥ 13) within surface 20” (50 cm)
... FX053A99X093 – Saline Upland (SU)
4b.
Soil neither saline nor sodic [EC < 4 and SAR < 13 within surface 20" (50 cm)]
5a.
Soils moderately deep or shallower [< 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
6a.
Soils with a restrictive lime cemented layer within 40" (100 cm) of the soil surface - Future Site Concept Petrocalcic - use 9b Thin Breaks
6b.
Soils without a restrictive lime cemented layer within 40" (100 cm) of the soil surface
7a.
Clay content is > 35% in surface mineral 4” (10 cm) [ribbon > 2” long]
8a.
Soils shallow or very shallow [< 20” (50 cm) deep] to bedrock, lithic, or paralithic root restrictive layer]
8b.
Soils moderately deep [≥ 20" (50cm) to < 40" (100cm) deep] to bedrock, lithic, or paralithic root restrictive layer]
7b.
Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
9a.
Soils containing BOTH a mollic epipedon and an argillic horizon - go to 16
16aa.
16a. Strongly or violently effervescent in surface mineral 5” (12 cm), lime conc. increasing with depth.
16bb.
Not strongly or violently effervescent within surface mineral 5" (12 cm)
9b.
Soils lacking either a mollic epipedon, an argillic horizon, or both
... FX053A99X160 – Thin Breaks (TB)
5b.
Soils deep to very deep [ ≥ 40” (100 cm) deep] to lithic, paralithic, or petrocalcic root restrictive layer
10a.
Soil skeletal within 20" (50 cm) of the surface [ ≥ 35% rock fragments within 20" of the surface]
11a.
Soil predominantly sandy-skeletal in the surface 20 inches (50cm)
... FX053A99X021 – Sandy Gravel (SyGr)
11b.
Soil predominantly loamy-skeletal in the surface 20 inches (50cm)
10b.
Soil not skeletal within 20" (50 cm) of the surface [ < 35% rock fragments in the surface 20”]
12a.
Sandy textural family in surface mineral 4” (10 cm)
13a.
Soils occur on dunes or dune fields, typically sand or loamy sand
13b.
Soils not as above - Future Site Concept Sands (Sa)* - use Sandy
12b.
Coarse loamy or finer textural family in surface mineral 4" (10 cm)
14a.
Coarse loamy or coarse silty textural family in surface mineral 4” (10 cm)
14b.
Fine loamy, fine silty or finer textural family in surface mineral 4" (10 cm)
15a.
Clay content is > 35% in surface mineral 4” (10 cm) [ribbon > 2” long]
15b.
Clay content ≤ 35% in surface mineral 4" (10 cm) [ribbon < 2” long]
16a.
Strongly or violently effervescent in surface mineral 5” (12 cm), lime conc. increasing with depth.
17a.
Slope < 15%
16b.
Not strongly or violently effervescent within surface mineral 5" (12 cm)
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The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.
