| Water Body Name: | Klamath River HU, Lost River HA, Tule Lake and Mt Dome HSAs |
| Water Body ID: | CAR1059101019990217163525 |
| Water Body Type: | River & Stream |
DECISION ID |
6819 |
Region 1 |
Klamath River HU, Lost River HA, Tule Lake and Mt Dome HSAs |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2006) |
| Revision Status | Original |
| Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that the original listing recommendation is faulty due to the lack of data. There was no site specific data or information to support the temperature listing for this water body. |
| Regional Board Decision Recommendation: | No new data were assessed for 2008. The decision has not changed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
| USEPA Action (if applicable): | |
|
|||||
| LOE ID: | 1658 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Narrative Description Data | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | There was no site specific data or information to support the temperature listing for this water body. EPA's temperature listings for North Coast rivers in 1992 were based on evidence of salmonid habitat degradation due to elevated temperature conditions that did not specifically reference impairments in this water body. As this water body does not support salmonid habitat and the 1992 listing record does not support a finding of temperature impairment, this listing was in error. Review of the recent temperature data for this water body indicates there is insufficient evidence of temperature impairment to support this listing. | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
6117 |
Region 1 |
Klamath River HU, Lost River HA, Tule Lake and Mt Dome HSAs |
||
| Pollutant: | Nutrients |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2006) |
| Revision Status | Original |
| Sources: | Agricultural Return Flows | Agricultural Water Diversion | Agriculture | Agriculture-irrigation tailwater | Agriculture-subsurface drainage | Drainage/Filling Of Wetlands | Habitat Modification | Natural Sources | Nonpoint Source | Removal of Riparian Vegetation | Specialty Crop Production | Water Diversions |
| TMDL Name: | Lower Lost River |
| TMDL Project Code: | 99 |
| Date TMDL Approved by USEPA: | 12/30/2008 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.
The "Lost River, California Total Maximum Daily Loads Nitrogen and Biochemical Oxygen Demand to Address Dissolved Oxygen and pH Impairments" was established by the USEPA on December 30, 2008. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the Section 303(d) List. |
| Regional Board Decision Recommendation: | No new data were assessed for 2008. The decision has not changed, expect to include the completion date of the Lost River TMDL. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
| USEPA Action (if applicable): | |
|
|||||
| LOE ID: | 3673 | ||||
| Pollutant: | Nutrients | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Unknown | ||||
| Temporal Representation: | Unknown | ||||
| Environmental Conditions: | Unknown | ||||
| QAPP Information: | Unknown | ||||
| QAPP Information Reference(s): | |||||