60e70c2192
- Make discharge field optional in data validator - Remove discharge from required fields list - Add explicit null check for discharge before float conversion - Prevent "float() argument must be a string or a real number, not 'NoneType'" errors - Allow records with valid water levels but malformed/null discharge data This completes the malformed data handling fix by updating the validator to match the parser's new behavior of allowing null discharge values. Before: Validator rejected records with null discharge After: Validator accepts records with null discharge, validates only if present 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>