(CRAM) For Wetlands User's Manual Version 5.0.2

More documents

Recommendations

Info

California Rapid Assessment Method for Wetlands v. 5.0.2 – Appendix I Figure 1: Diagrams of Project Boundary (dark green line) and Sample Universe (area shaded light green) showing a grid used to develop the Sample Frame of candidate AAs. A GIS can be used to generate the Sample Frame without using a grid. Step 3: For each Sample Universe, Develop the Sample Frame (Figures 2-4) The Sample Frame will be a map of all candidate AAs within the Sample Universe. See the following Table 3.7 from Chapter 3 of the CRAM Manual for a list of recommended AA sizes for each wetland type. There are two ways to begin creating a Sample Frame. One way is to overlay the Sample Universe with a grid having a cell size just large enough to encompass one AA. Another way is to use a GIS to generate a map of the maximum number of non-overlapping AAs. At this stage of Sample Frame development, candidate AAs can overlap the edge of the Sample Universe, although they cannot overlap each other. Any AAs that do not meet the criteria for an AA as presented in Chapter 3 of the CRAM Manual must be rejected. The following considerations are especially important. a. Each AA should not cross any obvious, major physical changes in topography, hydrology, or infrastructure that significantly control the sources, volumes, rates, or general composition of sediment supplies or water supplies within the AA at the time of the field assessment. b. Each AA can only include one wetland type. No AA can include any portion of more than one type of wetland, as defined by the CRAM Manual. c. Reject any candidate AA that is more than 50% outside the Sample Universe. The remaining AAs comprise the Sample Frame (Figure 3). 102 Sample Universe Project Boundary
California Rapid Assessment Method for Wetlands v. 5.0.2 – Appendix I Table 3.7 (from Chapter 3 of the CRAM Manual): Preferred and minimum AA sizes for each wetland type. Note: wetlands smaller than the preferred AA sizes can be assessed in their entirety. Wetland Type Slope Recommended AA Size Spring or Seep Preferred size is 0.50 ha (about 75m x 75m, but shape can vary); there is no minimum size (least examples can be mapped as dots). Wet Meadow Depressional Preferred size is 2.0 ha (about 140m x 140m, but shape can vary); minimum size is 0.1 ha (about 30m x 30m). Vernal Pool There are no size limits (see Section 3.5.6 and Table 3.8). Vernal Pool System Other Depressional Riverine Confined and Nonconfined Lacustrine Playa Estuarine Perennial Saline Perennial Non-saline Seasonal Preferred size is 1.0 km (about 300m x 300m, but shape can vary); There is no minimum size (see Section 3.5.6 and Table 3.8). Preferred size is 2.0 ha (about 140m x 140m, but shape can vary); Minimum size is 0.1 ha (about 30m x 30m). Preferred length is 10x average bankfull channel width; maximum length is 200m; minimum length is 100m. AA should extend laterally (landward) to encompass all the vegetation (trees, shrubs vines, etc) that probably provide woody debris, leaves, insects, etc. directly to the channel and its floodplain (Figure 3.4); minimum width is 2m. Preferred size is 2.0 ha (about 140m x 140m, but shape can vary); Minimum size is 0.5 ha (about 75m x 75m). Preferred size is 2.0 ha (about 140m x 140m, but shape can vary); Minimum size is 0.5 ha (about 75m x 75m). Preferred size and shape for estuarine wetlands is a 1.0 ha circle (radius about 55m), but the shape can be non-circular if necessary to fit the wetland and to meet hydro-geomorphic and other criteria as outlined in Sections 3.5.1 through 3.5.3. The minimum size is 0.1 ha (about 30m x 30m). Step 4: Identify and assess any Sample Universe only large enough for one AA. In these kinds of cases, the Sampler Universe and the AA are the same. After completing Step 4, go to Step 8. 103
Page 1 and 2:
California Rapid Assessment Method
Page 3 and 4:
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
LIST OF WORKSHEETS Worksheet 4.1: L
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
2.0 Overview California Rapid Asses
Page 27 and 28:
Page 29 and 30:
2.3 Developmental Framework Califor
Page 31 and 32:
KEY SERVICES Short- or long-term su
Page 33 and 34:
3.0 Summary California Rapid Assess
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
4.0 Summary California Rapid Assess
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68: California Rapid Assessment Method
Page 69 and 70: 4.2 Attribute 2: Hydrology Californ
Page 77 and 78: Condition Indicators of Channel Equ
Page 87 and 88: 4.3.2 Topographic Complexity Califo
Page 89 and 90: Rating A B C D Rating A B C D Calif
Page 105 and 106: Emergent Monocots with Canopy Calif
Page 117: California Rapid Assessment Method
Page 169 and 170:
Page 171 and 172:
Appendix VI: List of Vernal Pool Pl
Page 173:
Laurel % Steve Landscape Joshua Ave
show all

(CRAM) For Wetlands User's Manual Version 5.0.2

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?