Agency Code: 501 Project Code: KLC Site Code: 1091
Described by: Heather Percy Date: 29/07/1993

Observation type: auger boring Category: brief description

Location: MGA94 Zone: 50  535340 mE  6326708 mN Map sheet:  Wagin 100K
Location notes: Urquhart Road
Site notes: salt affected flats - deep drains used to control groundwater and flooding.  Site 10 metres upstream of drain.
Disturbance: Complete clearing; past cultivation.

Landform
Landform pattern: alluvial plain	Slope:  0 %
Relief/modal slope: level plain
Landform element: plain
Morphological type: flat
Pattern Relief:  alluvial plain	Microrelief: 1 m

Surface and Hydrological Properties
Rock outcrop: 0 %  
Surface coarse fragments: no gravel sized; no stones and boulder sized
Physical properties: slow profile permeability; deep soil; water table at 65 cm

Geology/parent material
Soil parent material: unconsolidated material (unidentified)
Alluvium derived from weathered granite regional geology mapped as alluvium (Cza).
Geology: unconsolidated material (unidentified)

Vegetation
Type:  salt tolerant species only; Surrounded by:  salt tolerant species only
Notes: Samphire - much bare ground.

Land use
Site: Not used. Surrounds: Grazing (grazing of vegetation planted by man).

Visible erosion, assessed flooding and salinity
slight flooding, slight ponding, severe salinity.

Current Classification
WA Soil Group: (1999) Saline wet soil
Australian Soil Classification: (2002) Bleached Sodosolic Salic Hydrosol
ASC confidence: high
Soil Series: Brynie 9
Map Unit: 257De_6

Other Classifications
Northcote PPF: Dy5.43

Soil Profile Description

Horizon | Depth (cm) | Description
A11 | 0-5 | Dark brown (7.5YR 3/2 moist) loamy medium sand; no mottles; loose moist consistence; apedal, single grain structure; no segregations segregations; no coarse fragments; rapid permeability; few very fine roots; pH 9 (Raupach and Tucker); EC 480 (mS/m (1:5)); abrupt boundary.
A21 | 5-20 | Brown (7.5YR 4/3 moist) medium sand with 4-8% clay; no mottles; loose moist consistence; apedal, single grain structure; no segregations segregations; no coarse fragments; rapid permeability; few very fine roots; pH 9 (Raupach and Tucker); EC 350 (mS/m (1:5)); clear boundary.
A22e | 20-25 | Pale brown (10YR 6/3 moist) medium sand with 2-4% clay; no mottles; loose wet consistence; apedal, single grain structure; no segregations segregations; no coarse fragments; rapid permeability; few very fine roots; pH 9 (Raupach and Tucker); abrupt, wavy boundary.
B21t | 25-45 | Light brownish grey (10YR 6/2 moist) medium sandy medium clay; few medium faint brownish yellow (10YR 6/6 moist)  redox mottles; very firm moderately moist consistence; pedal, moderate, columnar structure; no segregations segregations; no coarse fragments; slow permeability, slow dispersion, slow slaking, slightly calcareous; no roots; pH 9.5 (Raupach and Tucker); EC 150 (mS/m (1:5)); gradual boundary.
B22 | 45-70+ | Light brownish grey (10YR 6/2 moist) medium clay; many coarse distinct yellowish brown (10YR 5/6 moist)  redox mottles; very firm moderately moist consistence; rough-ped fabric; pedal, moderate structure; no segregations segregations; no coarse fragments; slow permeability, slow dispersion, slow slaking, slightly calcareous; no roots; pH 9.5 (Raupach and Tucker); EC 170 (mS/m (1:5)).