mapunit.txt   (MUKEY)    
      │
      ├──►  muaggatt.txt   (MUKEY)       # General soil properties (pH, slope, drainage, available water capacity)
      │
      ├──►  comp.txt     (MUKEY, COKEY)  # Soil components within a map unit
            │
            ├──► chorizon.txt  (COKEY, CHKEY)  # Soil horizon properties (sand, silt, clay, pH, permeability, organic matter)
            │
            ├──► cgeomord.txt  (COKEY)        # Geomorphic and landform features (hills, terraces, floodplains, alluvial fans)
            │
            ├──► sainterp.txt  (MUKEY)        # Soil suitability for construction, erosion risk, drought resistance
            │
            ├──► mucrpyd.txt   (MUKEY)        # Crop yield potential for different crops (e.g., bushels per acre for corn, wheat, soybeans)
            │
            ├──► sdvattribute.txt  (Metadata)  # Descriptions of all soil attributes in SSURGO
            │
            ├──► ceplants.txt  (MUKEY, COKEY)  # Ecological site classification and plant species data for soil components
            │
            ├──► chconsis.txt  (COKEY, CHKEY)  # Soil consistency at different moisture levels (dry, moist, wet)
            │
            ├──► chfrags.txt  (COKEY, CHKEY)   # Rock fragment percentages in different soil horizons
            │
            ├──► chpores.txt  (COKEY, CHKEY)   # Pore size distribution and soil structure details
            │
            ├──► chtext.txt  (COKEY, CHKEY)    # Soil texture classifications (e.g., loam, sandy loam, clay)
            │
            ├──► chtexgrp.txt  (COKEY, CHKEY)  # Soil texture group (used in hydrologic and agricultural modeling)
            │
            ├──► chaashto.txt  (COKEY, CHKEY)  # AASHTO soil classification system (used in highway engineering)
            │
            ├──► chdsuffx.txt  (COKEY, CHKEY)  # Descriptive suffix for soil horizons (e.g., Bt, Ap, Ck)
            │
            ├──► cpmatgrp.txt  (COKEY)         # Parent material group (e.g., sedimentary rock, volcanic ash)
            │
            ├──► ctxfmmin.txt  (COKEY)         # Texture and mineralogy classification
            │
            ├──► ctxmoicl.txt  (COKEY)         # Soil moisture and climate classifications
            │
            ├──► csmoist.txt  (COKEY)          # Soil moisture regimes (e.g., aridic, xeric, ustic)
            │
            ├──► csfrags.txt  (COKEY)          # Coarse fragments (gravel, cobbles) within soil layers
            │
            ├──► csmorgc.txt  (COKEY)          # Organic carbon content
            │
            ├──► csmorhpp.txt  (COKEY)         # Soil horizon permeability potential
            │
            ├──► csmorss.txt  (COKEY)          # Soil structure stability
            │
            ├──► cdfeat.txt  (COKEY)           # Soil depth and restrictive features (e.g., fragipan, bedrock depth)
            │
            ├──► ctxfmoth.txt  (COKEY)         # Other soil texture classifications
            │
            ├──► csmormr.txt  (COKEY)          # Soil mineralogy and reaction characteristics
            │
            ├──► chstrgrp.txt  (COKEY)         # Soil structure grouping classification
            │
            ├──► ctext.txt  (COKEY)            # Generalized soil textural classification
            │
            ├──► crstrcts.txt  (COKEY)         # Root restriction depth and limitations for plant growth
            │
            ├──► distimd.txt  (MUKEY)          # Distance to restrictive soil features
            │
            ├──► distlmd.txt  (MUKEY)          # Limiting depth for soil use and management
            │
            ├──► distmd.txt  (MUKEY)           # Depth to restrictive layer (e.g., bedrock, hardpan)
            │
            ├──► sacatlog.txt  (Metadata)      # Catalog of all SSURGO datasets available
            │
            ├──► version.txt  (Metadata)       # Version and update information for the SSURGO database






For agriculture tasks, the best 10 variables from the SSURGO muaggatt dataset would be:

🌱 Best 10 Variables for Agriculture
	1.	aws0100wta → Available Water Storage in Top 100 cm (cm H₂O)
	•	Measures how much water the soil can hold, critical for crop water availability.
	2.	ph1to1h2o_r → Soil pH in Water
	•	Affects nutrient availability and crop tolerance.
	3.	sandtotal_r → Total Sand Percentage
	•	Impacts drainage and aeration.
	4.	silttotal_r → Total Silt Percentage
	•	Contributes to soil structure and fertility.
	5.	claytotal_r → Total Clay Percentage
	•	Affects water retention, compaction, and root penetration.
	6.	drclassdcd → Dominant Drainage Class
	•	Indicates how well the soil drains water (e.g., well-drained vs. poorly drained).
	7.	hydgrpdcd → Hydrologic Soil Group
	•	Determines runoff potential, affecting irrigation and erosion risk.
	8.	slopegraddcp → Slope Gradient (%)
	•	Helps assess erosion risk and water runoff.
	9.	iccdcd → Integrated Crop Classification Code
	•	Indicates soil suitability for cropping.
	10.	awmmfpwwta → Available Water for Wetlands

	•	Important for wetland agriculture and flood-prone areas.

🚀 Why These 10 Variables?
	•	Water Retention & Drainage (aws0100wta, drclassdcd, hydgrpdcd)
	•	Soil Texture (sandtotal_r, silttotal_r, claytotal_r)
	•	Soil Chemistry (ph1to1h2o_r)
	•	Erosion & Land Slope (slopegraddcp)
	•	Crop Suitability (iccdcd)
	•	Irrigation & Wetland Potential (awmmfpwwta)

This set provides a balanced mix of soil physics, chemistry, and structure to optimize crop growth, water management, and soil conservation. 🚀

Let me know if you need any refinements! 🔥