White Breast Creek IA 04-LDM-1466
from confluence with Little White Breast Cr. (S11 T73N R22W Lucas Co.) to confluence with Brush Cr. in S22 T72N R23W Lucas Co.
Assessment Comments
1997 Biocriteria: Fish IBI=23(poor), BM-IBI=57(good).
Basis for Assessment
Used results of the August 1997 DNR biocriteria sampling approximately 6 miles S of Lacona to update the assessment of support of the Class B(LR) aquatic life uses. Based on results of the biocriteria sampling, continue to assess support of the Class B(LR) uses as FST due to (1) presence of a moderately diverse fish community of 15 species from 4 familiies, (2) presence of a majority of the expected fish taxa (6 of 8) for streams in the Central Irregular Plains ecoregion, (3) results of the 4 DNR stream use assessments in 1990 and 1994 (see assessment developed for the 1996 report), and (4) lack of violations of Class B(LR) WQ criteria in the sample collected during the biocriteria sampling.
Assessment Key Dates
| 8/1/1997 | Biological Monitoring |
Methods
| 320 | Benthic macroinvertebrate surveys |
| 330 | Fish surveys |
| 380 | Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof |
| 220 | Non-fixed station physical/chemical monitoring (conventional pollutant only) |
| 315 | Regional reference site approach |
Monitoring Levels
| Biological | 4 |
| Habitat | 4 |
| Physical Chemistry | 1 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 1 |
| BioIntegrity | Fair |