Pinnacles National Monument

Location:California, United States
IUCN Category:V
Area:2,869 acres (1,161 hectares)
Species:All  Endangered  Invasive
Website:View website
Climate:View Climate Data
Land Use:View Land Use Data

Ecoregions

California interior chaparral and woodlands

Soils

Link to Map
Protected Area Boundary
 AB
   
Share60 %30 %10 %60 %20 %20 %
Soil TypeChromic LuvisolsEutric FluvisolsMollic GleysolsChromic LuvisolsEutric RegosolsLithosols
Topsoil TextureMediumMediumMediumMediumMediumMedium
Reference Depth100 cm100 cm100 cm100 cm100 cm10 cm
DrainageModerately wellPoorPoorModerately wellModerately wellImperfectly
Available Water Capacity150 m150 m150 m100 m150 m15 mm
Phase 1   Stony  
Topsoil Properties
Gravel9 %4 %4 %9 %27 %26 %
Sand47 %39 %38 %47 %47 %43 %
Silt29 %41 %40 %29 %34 %34 %
Clay24 %20 %22 %24 %19 %23 %
USDA TextureLoamLoamLoamLoamLoamLoam
Reference Bulk Density1.39 g/cm³1.41 g/cm³1.39 g/cm³1.39 g/cm³1.43 g/cm³1.39 g/cm³
Bulk Density1.54 g/cm³1.36 g/cm³1.28 g/cm³1.54 g/cm³1.21 g/cm³1.3 g/cm³
Organic Carbon0.86 %0.9 %1.74 %0.86 %0.97 %1.4 %
PH6.47.36.56.46.47.6
Clay Cation Exchange Capacity38 cmol kg⁻¹62 cmol kg⁻¹45 cmol kg⁻¹38 cmol kg⁻¹41 cmol kg⁻¹42 cmol kg⁻¹
Soil Cation Exchange Capacity12 cmol kg⁻¹16 cmol kg⁻¹17 cmol kg⁻¹12 cmol kg⁻¹12 cmol kg⁻¹15 cmol kg⁻¹
Base Saturation89 %91 %87 %89 %79 %100 %
Total Exchangeable Bases10 cmol kg⁻¹16.4 cmol kg⁻¹9.9 cmol kg⁻¹10 cmol kg⁻¹15.1 cmol kg⁻¹15.6 cmol kg⁻¹
Calcium Carbonate0 %1 %0 %0 %0 %3.9 %
Calcium Sulphate0 %0 %0 %0 %0 %0 %
Exchangeable Sodium1 %2 %2 %1 %1 %4 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel8 %8 %3 %8 %28 % 
Sand39 %41 %37 %39 %50 % 
Silt27 %38 %35 %27 %32 % 
Clay34 %21 %28 %34 %18 % 
USDA TextureClay loamLoamClay loamClay loamLoam 
Reference Bulk Density1.33 g/cm³1.4 g/cm³1.35 g/cm³1.33 g/cm³1.44 g/cm³ 
Bulk Density1.52 g/cm³1.39 g/cm³1.36 g/cm³1.52 g/cm³1.46 g/cm³ 
Organic Carbon0.38 %0.4 %0.67 %0.38 %0.4 % 
PH6.37.576.36.9 
Clay Cation Exchange Capacity40 cmol kg⁻¹58 cmol kg⁻¹44 cmol kg⁻¹40 cmol kg⁻¹55 cmol kg⁻¹ 
Soil Cation Exchange Capacity15 cmol kg⁻¹14 cmol kg⁻¹14 cmol kg⁻¹15 cmol kg⁻¹11 cmol kg⁻¹ 
Base Saturation93 %97 %94 %93 %85 % 
Total Exchangeable Bases12.3 cmol kg⁻¹15.1 cmol kg⁻¹11 cmol kg⁻¹12.3 cmol kg⁻¹10.3 cmol kg⁻¹ 
Calcium Carbonate0 %3.9 %0.4 %0 %0.1 % 
Calcium Sulphate0 %0 %0 %0 %0 % 
Exchangeable Sodium1 %3 %1 %1 %2 % 
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1 
Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.