Article Figures & Data
Figures
- Figure 1
The South Fork of the Iowa River and the HUC12 subwatershed boundaries and land use. Identification codes for the subwatersheds are the last three digits of the full HUC12 code: all these codes would be preceded by 070802070 to obtain the full code.
- Figure 2
Selected fields showing mapped water and sediment control basins (WASCOBs), grassed waterways, and terraces. These conservation practices (CP) are shown as colored lines, and the area that they treat (catchment/watershed) are the shaded areas. Note the presence of CP can be seen in each of the panels: for instance, (a and c) unmapped WASCOBS compared to (b) mapped WASCOBs.
- Figure 3
Increase in the presence of grassed waterways, water and sediment control basins (WASCOBs), contour buffer strips (CBS), and terraces in South Fork of the Iowa River for the decades beginning in the years shown. Only one image for each decade (x-axis) was processed to obtain the number of conservation practices (CP) within the watershed. For the decades beginning in 2000 and 2010, images were available annually, and those data are accumulated for the 2000 to 2009 and 2010 to 2016 periods.
- Figure 4
Number of installed and removed grassed waterways (GWW) and water and sediment control basins (WASCOBs) in South Fork of the Iowa River for the decade beginning in the year shown. Installations and removals are evaluated by comparison with previous decade's imagery for 1930 to 1990. For the decades beginning in 2000 and 2010, images were available annually, and those data are accumulated for the 2000 to 2009 and 2010 to 2016 periods.
- Figure 5
Map of areas treated by conservation practices (CP) coded by presence/absence of existing practices. The total area treated for each CP is the sum of existing CP (no overlap with Agricultural Conservation Planning Framework [ACPF], blue) and the overlapping CP (existing CP area overlapping with placement predicted by the ACPF, green). The ACPF identified land areas without existing CP where CP could be installed (yellow).
- Figure 6
Temporal change in areas of land within South Fork of the Iowa River HUC12 subwatersheds that are treated by existing conservation practice (CP) (blue), treated by existing CP in locations that CP are also predicted for treatment by the Agricultural Conservation Planning Framework (ACPF; green), and areas that the ACPF indicates could be treated by these CP, but are not presently treated (gold). The total area treated for each CP is the sum of existing CP (no overlap with ACPF) and the overlapping CP (existing CP area overlapping with placement predicted by the ACPF). Identification codes for the subwatersheds are the last four digits of the full HUC12 code: all these codes would be preceded by 07080207 to obtain the full code. CPs include (a, d, g, j) grass waterways, (b, e, h, k) WASCOBs, and (c, f, i, l) terraces/contour buffer strips for (a through c) 1960, (d through f) 1990, (g through i) 2010, and (j through l) 2016.
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