19. 35-24-90_1_7_20200918_Excerpt_RGCP_Aquatic_Habitat_Draft_Designs.pdf

Rio Grande Canalization Reach Aquatic Habitat Restoration Site Alternatives and Conceptual Designs: Addendum 1

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Figure 22. Vegetation community types growing along different segments of the Montoya Intercepting Drain

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MID Geometry: Eight topographic cross‐sections were established along the 1.5‐mile length of the MID using a Real‐Time Kinematic (RTK) global positioning system (GPS). The cross‐section locations displayed in Figures 23 thru 30. A GPS point was recorded approximately every two feet along each cross‐section line. All three cross‐sections in Segment 1 (Figures 23‐25) span only to the approximate center of the

MID due to poor satellite configuration, but the other five cross‐sections (three in Segment 2 and two in

Segment 3) span the entire MID width (Figures 26‐30). The wetted width at the cross‐sections in

Segments 2 and 3 range from approximately 35‐feet and 50‐feet. Water depths during the July 8 site assessment averaged between approximately 2.5 and 3.5 feet in Segments 1 and 2 and between 1.0 and

2.0 feet in Segment 3. Dense saltcedar vegetation along the steep north/east bank restricted access to the north bankline terrace in all locations except at XS‐7 in Segment 3 (Figure 29).

Figure 23. Elevation profile of XS‐1, Segment 1. The distance stations displayed along the x‐axis extend from south (station 0‐ft) to north. Poor satellite coverage precluded extending this cross‐section across the entire width of the MID.

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Figure 24. Elevation profile of XS‐2, Segment 1. The distance stations displayed along the x‐axis extend from south (station 0‐ft) to north. Poor satellite coverage precluded extending this cross‐section across the entire width of the MID.

Figure 25. Elevation profile of XS‐3, Segment 1. The distance stations displayed along the x‐axis extend from south (station 0‐ft) to north. Poor satellite coverage precluded extending this cross‐section across the entire width of the MID.

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Figure 26. Elevation profile of XS‐4, Segment 2. The distance stations displayed along the x‐axis extend from south (station 0‐ft) to north.

Figure 27. Elevation profile of XS‐5, Segment 2. The distance stations displayed along the x‐axis extend from south (station 0‐ft) to north.

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Figure 28. Elevation profile of XS‐6, Segment 2. The distance stations displayed along the x‐axis extend

Figure 29. Elevation profile of XS‐7, Segment 3. The distance stations displayed along the x‐axis extend

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