| Riffle Summary - Proportion of riffle
habitat comprised of gravel and fine silts/organic substrate |
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| Basin |
Reach |
Total Riffle Area (m2) |
% Riffle Area |
Boulders (per 100-m2) |
% Gravel 1/ |
% Cobble |
% Fines 2/ |
| Miller Creek |
Miller 1 |
203 |
45% |
5 |
27% (M) |
35% |
33% (UD) |
| |
Miller 2 |
319 |
14% |
5 |
25% (M) |
40% |
16% (M/D) |
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Miller 3 |
0 |
0% |
0 |
NA |
NA |
NA |
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| 1/ Riffle Gravel Condition: % Gravel < 15% = Undesirable; %
Gravel >= 15% & < 35% = Marginal; % Gravel > = 35% = Desirable |
| 2/ Riffle Fine Condition: % Fines > 25% = Undesirable; %
Fines <= 25% & >=12% = Marginal; % Fines < 12% = Desirable |
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| Data Source:
ODFW 2000 |
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