Add Data and Join Tables

First I connected to the Assignment6 geodatabase and pulled the nm_polygon data into ArcMap.

I then opened Data Frame Properties and selected the Coordinate System tab, then pressed modify and changed the central meridian from -96 to -106.

Next, I changed the color of the individual soil groups by right-clicking on nm_polygon and selecting Properties, selecting the Symbology tab, then went to categories and selected MUID under the Value Field and “Add All Values.” The result is shown below.

Next, I brought in the Pecos HUC by dragging it into the display screen. I then went to Properties again, selected the Symbology tab and the symbol and selected “Hollow” so that I could see the underlying soils data. I also increased the line width so that the outline of the shape was more visible.

To get the soil data that is within the Pecos river basin, I went to ArcToolbox > Analysis Tools > Extract > Clip. In the Input Features, I selected “nm_polygon”, in Clip Features selected “PecosHUC,” and then changed the location of the Output Feature Class.

Next, I began to add metadata to ArcMap to make my soil map meaningful. I brought in the files named “comp,” “layer,” and “mapunit” to ArcMap. I then right-clicked the PecosHWSoils layer and went to the Joins & Relates>Join. I joined together PecosHWSoils with the mapunit data based on the MUID.

I then related the comp table to the PecosHWSoils layer by right-clicking PecosHWSoils> Joins & Relates > Relate.

Calculating Soil Properties

1. Describe the NM963 soil in terms of its properties in the Mapunit and Component Tables.

In the mapunit table, NM963 is described as a Reginer-Latom-Rock Outcrop. In the Component Table, NM963 is described as having 7 individual component names.

2. How many components does it have?

It has 8 components.

3. What are their names?

There are five actual component names: Regnier, Latom, Rock Outcrop, Los Tanos, and Gallen. The remaining three vary from others based on their ranges of slope.

4. What percentage of the map unit does each component comprise?

Regnier (36%), Latom(32%), Rock Outcrop(18%), Los Tanos(12%), and Gallen(2%). Again, this does not include differences in slope.

5. What is the predominant surface slope where this soil unit is found?

The predominant surface slope is 2% (average of 1-3%)- 15% composed of both the Regnier and Latom soil components. The overall average of the predominant surface slope is 7.5%.

6. What is the dominant soil texture?

The dominant soil texture is clay.

7. What percentage of the soil is in hydrologic soil groups A, B, C, D?

A is 0%, B is 2%, C is 12% , and D composes 86% of the Regnier soil group.

8. Do these soil properties make sense considering where this soil is located?

Yes, the soil properties make sense.

Average Water Holding Capacity for the Map Unit:

1. For mapunit NM963, how many layers does each component have?

Component	Number of Layers
1	3
2	2
3	1
4	3
5	3
6	2
7	3
8	4

2. What is the total soil depth (inches) for each layer and the average depth (inches) for the map unit?

Component	Layer	Total Soil Depth (in)
1	1	0-9
1	2	9-18
1	3	18-22
2	1	0-8
2	2	8-20
3	1	0-60
4	1	0-6
4	2	6-24
4	3	24-28
5	1	0-9
5	2	9-18
5	3	18-22
6	1	0-8
6	2	8-20
7	1	0-9
7	2	9-18
7	3	18-22
8	1	0-4
8	2	4-15
8	3	15-25
8	4	25-60

The average total depth for the map unit is 29.68 inches.

3. What is the total water holding capacity (inches of water) over the full soil depth for each component?

Component	Total Water Holding Capacity (in)
1	7.48
2	2.5
3	0
4	7.56
5	7.48
6	1
7	5.94
8	16.8

4. What is the average water holding capacity (inches of water) for soils in this map unit?

The average water holding capacity for the soils in the map unit is 4.63 inches.

Next I went to the rgis.unm.edu website and found two coverages, one for Ft. Sumner and one for Santa Fe. I merged the files together and then clipped them to the Pecos HUC file. The result is shown below.

I next changed the symbology and labels to represent the different Anderson Land Use Codes. The result is shown on the next page.